diff --git a/program/code/.flake8 b/program/code/.flake8
new file mode 100644
index 00000000..10e5a00f
--- /dev/null
+++ b/program/code/.flake8
@@ -0,0 +1,2 @@
+[flake8]
+max-func-length=16
\ No newline at end of file
diff --git a/program/code/.pylintrc b/program/code/.pylintrc
new file mode 100644
index 00000000..93b9813a
--- /dev/null
+++ b/program/code/.pylintrc
@@ -0,0 +1,630 @@
+[MAIN]
+
+# Analyse import fallback blocks. This can be used to support both Python 2 and
+# 3 compatible code, which means that the block might have code that exists
+# only in one or another interpreter, leading to false positives when analysed.
+analyse-fallback-blocks=no
+
+# Clear in-memory caches upon conclusion of linting. Useful if running pylint
+# in a server-like mode.
+clear-cache-post-run=no
+
+# Load and enable all available extensions. Use --list-extensions to see a list
+# all available extensions.
+#enable-all-extensions=
+
+# In error mode, messages with a category besides ERROR or FATAL are
+# suppressed, and no reports are done by default. Error mode is compatible with
+# disabling specific errors.
+#errors-only=
+
+# Always return a 0 (non-error) status code, even if lint errors are found.
+# This is primarily useful in continuous integration scripts.
+#exit-zero=
+
+# A comma-separated list of package or module names from where C extensions may
+# be loaded. Extensions are loading into the active Python interpreter and may
+# run arbitrary code.
+extension-pkg-allow-list=
+
+# A comma-separated list of package or module names from where C extensions may
+# be loaded. Extensions are loading into the active Python interpreter and may
+# run arbitrary code. (This is an alternative name to extension-pkg-allow-list
+# for backward compatibility.)
+extension-pkg-whitelist=
+
+# Return non-zero exit code if any of these messages/categories are detected,
+# even if score is above --fail-under value. Syntax same as enable. Messages
+# specified are enabled, while categories only check already-enabled messages.
+fail-on=
+
+# Specify a score threshold under which the program will exit with error.
+fail-under=10
+
+# Interpret the stdin as a python script, whose filename needs to be passed as
+# the module_or_package argument.
+#from-stdin=
+
+# Files or directories to be skipped. They should be base names, not paths.
+ignore=CVS
+
+# Add files or directories matching the regular expressions patterns to the
+# ignore-list. The regex matches against paths and can be in Posix or Windows
+# format. Because '\\' represents the directory delimiter on Windows systems,
+# it can't be used as an escape character.
+ignore-paths=
+
+# Files or directories matching the regular expression patterns are skipped.
+# The regex matches against base names, not paths. The default value ignores
+# Emacs file locks
+ignore-patterns=^\.#
+
+# List of module names for which member attributes should not be checked
+# (useful for modules/projects where namespaces are manipulated during runtime
+# and thus existing member attributes cannot be deduced by static analysis). It
+# supports qualified module names, as well as Unix pattern matching.
+ignored-modules=
+
+# Python code to execute, usually for sys.path manipulation such as
+# pygtk.require().
+#init-hook=
+
+# Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
+# number of processors available to use, and will cap the count on Windows to
+# avoid hangs.
+jobs=1
+
+# Control the amount of potential inferred values when inferring a single
+# object. This can help the performance when dealing with large functions or
+# complex, nested conditions.
+limit-inference-results=100
+
+# List of plugins (as comma separated values of python module names) to load,
+# usually to register additional checkers.
+load-plugins=
+
+# Pickle collected data for later comparisons.
+persistent=yes
+
+# Minimum Python version to use for version dependent checks. Will default to
+# the version used to run pylint.
+py-version=3.11
+
+# Discover python modules and packages in the file system subtree.
+recursive=no
+
+# Add paths to the list of the source roots. Supports globbing patterns. The
+# source root is an absolute path or a path relative to the current working
+# directory used to determine a package namespace for modules located under the
+# source root.
+source-roots=
+
+# When enabled, pylint would attempt to guess common misconfiguration and emit
+# user-friendly hints instead of false-positive error messages.
+suggestion-mode=yes
+
+# Allow loading of arbitrary C extensions. Extensions are imported into the
+# active Python interpreter and may run arbitrary code.
+unsafe-load-any-extension=no
+
+# In verbose mode, extra non-checker-related info will be displayed.
+#verbose=
+
+
+[BASIC]
+
+# Naming style matching correct argument names.
+argument-naming-style=snake_case
+
+# Regular expression matching correct argument names. Overrides argument-
+# naming-style. If left empty, argument names will be checked with the set
+# naming style.
+#argument-rgx=
+
+# Naming style matching correct attribute names.
+attr-naming-style=snake_case
+
+# Regular expression matching correct attribute names. Overrides attr-naming-
+# style. If left empty, attribute names will be checked with the set naming
+# style.
+#attr-rgx=
+
+# Bad variable names which should always be refused, separated by a comma.
+bad-names=foo,
+          bar,
+          baz,
+          toto,
+          tutu,
+          tata
+
+# Bad variable names regexes, separated by a comma. If names match any regex,
+# they will always be refused
+bad-names-rgxs=
+
+# Naming style matching correct class attribute names.
+class-attribute-naming-style=any
+
+# Regular expression matching correct class attribute names. Overrides class-
+# attribute-naming-style. If left empty, class attribute names will be checked
+# with the set naming style.
+#class-attribute-rgx=
+
+# Naming style matching correct class constant names.
+class-const-naming-style=UPPER_CASE
+
+# Regular expression matching correct class constant names. Overrides class-
+# const-naming-style. If left empty, class constant names will be checked with
+# the set naming style.
+#class-const-rgx=
+
+# Naming style matching correct class names.
+class-naming-style=PascalCase
+
+# Regular expression matching correct class names. Overrides class-naming-
+# style. If left empty, class names will be checked with the set naming style.
+#class-rgx=
+
+# Naming style matching correct constant names.
+const-naming-style=UPPER_CASE
+
+# Regular expression matching correct constant names. Overrides const-naming-
+# style. If left empty, constant names will be checked with the set naming
+# style.
+#const-rgx=
+
+# Minimum line length for functions/classes that require docstrings, shorter
+# ones are exempt.
+docstring-min-length=-1
+
+# Naming style matching correct function names.
+function-naming-style=snake_case
+
+# Regular expression matching correct function names. Overrides function-
+# naming-style. If left empty, function names will be checked with the set
+# naming style.
+#function-rgx=
+
+# Good variable names which should always be accepted, separated by a comma.
+good-names=i,
+           j,
+           k,
+           ex,
+           Run,
+           _
+
+# Good variable names regexes, separated by a comma. If names match any regex,
+# they will always be accepted
+good-names-rgxs=
+
+# Include a hint for the correct naming format with invalid-name.
+include-naming-hint=no
+
+# Naming style matching correct inline iteration names.
+inlinevar-naming-style=any
+
+# Regular expression matching correct inline iteration names. Overrides
+# inlinevar-naming-style. If left empty, inline iteration names will be checked
+# with the set naming style.
+#inlinevar-rgx=
+
+# Naming style matching correct method names.
+method-naming-style=snake_case
+
+# Regular expression matching correct method names. Overrides method-naming-
+# style. If left empty, method names will be checked with the set naming style.
+#method-rgx=
+
+# Naming style matching correct module names.
+module-naming-style=snake_case
+
+# Regular expression matching correct module names. Overrides module-naming-
+# style. If left empty, module names will be checked with the set naming style.
+#module-rgx=
+
+# Colon-delimited sets of names that determine each other's naming style when
+# the name regexes allow several styles.
+name-group=
+
+# Regular expression which should only match function or class names that do
+# not require a docstring.
+no-docstring-rgx=^_
+
+# List of decorators that produce properties, such as abc.abstractproperty. Add
+# to this list to register other decorators that produce valid properties.
+# These decorators are taken in consideration only for invalid-name.
+property-classes=abc.abstractproperty
+
+# Regular expression matching correct type alias names. If left empty, type
+# alias names will be checked with the set naming style.
+#typealias-rgx=
+
+# Regular expression matching correct type variable names. If left empty, type
+# variable names will be checked with the set naming style.
+#typevar-rgx=
+
+# Naming style matching correct variable names.
+variable-naming-style=snake_case
+
+# Regular expression matching correct variable names. Overrides variable-
+# naming-style. If left empty, variable names will be checked with the set
+# naming style.
+#variable-rgx=
+
+
+[CLASSES]
+
+# Warn about protected attribute access inside special methods
+check-protected-access-in-special-methods=no
+
+# List of method names used to declare (i.e. assign) instance attributes.
+defining-attr-methods=__init__,
+                      __new__,
+                      setUp,
+                      asyncSetUp,
+                      __post_init__
+
+# List of member names, which should be excluded from the protected access
+# warning.
+exclude-protected=_asdict,_fields,_replace,_source,_make,os._exit
+
+# List of valid names for the first argument in a class method.
+valid-classmethod-first-arg=cls
+
+# List of valid names for the first argument in a metaclass class method.
+valid-metaclass-classmethod-first-arg=mcs
+
+
+[DESIGN]
+# List of regular expressions of class ancestor names to ignore when counting
+# public methods (see R0903)
+exclude-too-few-public-methods=
+
+# List of qualified class names to ignore when counting class parents (see
+# R0901)
+ignored-parents=
+
+# Maximum number of arguments for function / method.
+max-args=5
+
+# Maximum number of attributes for a class (see R0902).
+max-attributes=7
+
+# Maximum number of boolean expressions in an if statement (see R0916).
+max-bool-expr=5
+
+# Maximum number of branch for function / method body.
+max-branches=12
+
+# Maximum number of locals for function / method body.
+max-locals=15
+
+# Maximum number of parents for a class (see R0901).
+max-parents=7
+
+# Maximum number of public methods for a class (see R0904).
+max-public-methods=20
+
+# Maximum number of return / yield for function / method body.
+max-returns=6
+
+# Maximum number of statements in function / method body.
+max-statements=50
+
+# Minimum number of public methods for a class (see R0903).
+min-public-methods=2
+
+
+[EXCEPTIONS]
+
+# Exceptions that will emit a warning when caught.
+overgeneral-exceptions=builtins.BaseException,builtins.Exception
+
+
+[FORMAT]
+
+# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
+expected-line-ending-format=
+
+# Regexp for a line that is allowed to be longer than the limit.
+ignore-long-lines=^\s*(# )?<?https?://\S+>?$
+
+# Number of spaces of indent required inside a hanging or continued line.
+indent-after-paren=4
+
+# String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
+# tab).
+indent-string='    '
+
+# Maximum number of characters on a single line.
+max-line-length=100
+
+# Maximum number of lines in a module.
+max-module-lines=1000
+
+# Allow the body of a class to be on the same line as the declaration if body
+# contains single statement.
+single-line-class-stmt=no
+
+# Allow the body of an if to be on the same line as the test if there is no
+# else.
+single-line-if-stmt=no
+
+
+[IMPORTS]
+
+# List of modules that can be imported at any level, not just the top level
+# one.
+allow-any-import-level=
+
+# Allow explicit reexports by alias from a package __init__.
+allow-reexport-from-package=no
+
+# Allow wildcard imports from modules that define __all__.
+allow-wildcard-with-all=no
+
+# Deprecated modules which should not be used, separated by a comma.
+deprecated-modules=
+
+# Output a graph (.gv or any supported image format) of external dependencies
+# to the given file (report RP0402 must not be disabled).
+ext-import-graph=
+
+# Output a graph (.gv or any supported image format) of all (i.e. internal and
+# external) dependencies to the given file (report RP0402 must not be
+# disabled).
+import-graph=
+
+# Output a graph (.gv or any supported image format) of internal dependencies
+# to the given file (report RP0402 must not be disabled).
+int-import-graph=
+
+# Force import order to recognize a module as part of the standard
+# compatibility libraries.
+known-standard-library=
+
+# Force import order to recognize a module as part of a third party library.
+known-third-party=enchant
+
+# Couples of modules and preferred modules, separated by a comma.
+preferred-modules=
+
+
+[LOGGING]
+
+# The type of string formatting that logging methods do. `old` means using %
+# formatting, `new` is for `{}` formatting.
+logging-format-style=old
+
+# Logging modules to check that the string format arguments are in logging
+# function parameter format.
+logging-modules=logging
+
+
+[MESSAGES CONTROL]
+
+# Only show warnings with the listed confidence levels. Leave empty to show
+# all. Valid levels: HIGH, CONTROL_FLOW, INFERENCE, INFERENCE_FAILURE,
+# UNDEFINED.
+confidence=HIGH,
+           CONTROL_FLOW,
+           INFERENCE,
+           INFERENCE_FAILURE,
+           UNDEFINED
+
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifiers separated by comma (,) or put this
+# option multiple times (only on the command line, not in the configuration
+# file where it should appear only once). You can also use "--disable=all" to
+# disable everything first and then re-enable specific checks. For example, if
+# you want to run only the similarities checker, you can use "--disable=all
+# --enable=similarities". If you want to run only the classes checker, but have
+# no Warning level messages displayed, use "--disable=all --enable=classes
+# --disable=W".
+disable=raw-checker-failed,
+        bad-inline-option,
+        locally-disabled,
+        file-ignored,
+        suppressed-message,
+        useless-suppression,
+        deprecated-pragma,
+        use-symbolic-message-instead
+
+# Enable the message, report, category or checker with the given id(s). You can
+# either give multiple identifier separated by comma (,) or put this option
+# multiple time (only on the command line, not in the configuration file where
+# it should appear only once). See also the "--disable" option for examples.
+enable=c-extension-no-member
+
+
+[METHOD_ARGS]
+
+# List of qualified names (i.e., library.method) which require a timeout
+# parameter e.g. 'requests.api.get,requests.api.post'
+timeout-methods=requests.api.delete,requests.api.get,requests.api.head,requests.api.options,requests.api.patch,requests.api.post,requests.api.put,requests.api.request
+
+
+[MISCELLANEOUS]
+
+# List of note tags to take in consideration, separated by a comma.
+notes=FIXME,
+      XXX,
+      TODO
+
+# Regular expression of note tags to take in consideration.
+notes-rgx=
+
+
+[REFACTORING]
+
+# Maximum number of nested blocks for function / method body
+max-nested-blocks=5
+
+# Complete name of functions that never returns. When checking for
+# inconsistent-return-statements if a never returning function is called then
+# it will be considered as an explicit return statement and no message will be
+# printed.
+never-returning-functions=sys.exit,argparse.parse_error
+
+
+[REPORTS]
+
+# Python expression which should return a score less than or equal to 10. You
+# have access to the variables 'fatal', 'error', 'warning', 'refactor',
+# 'convention', and 'info' which contain the number of messages in each
+# category, as well as 'statement' which is the total number of statements
+# analyzed. This score is used by the global evaluation report (RP0004).
+evaluation=max(0, 0 if fatal else 10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10))
+
+# Template used to display messages. This is a python new-style format string
+# used to format the message information. See doc for all details.
+msg-template=
+
+# Set the output format. Available formats are text, parseable, colorized, json
+# and msvs (visual studio). You can also give a reporter class, e.g.
+# mypackage.mymodule.MyReporterClass.
+#output-format=
+
+# Tells whether to display a full report or only the messages.
+reports=no
+
+# Activate the evaluation score.
+score=yes
+
+
+[SIMILARITIES]
+
+# Comments are removed from the similarity computation
+ignore-comments=yes
+
+# Docstrings are removed from the similarity computation
+ignore-docstrings=yes
+
+# Imports are removed from the similarity computation
+ignore-imports=yes
+
+# Signatures are removed from the similarity computation
+ignore-signatures=yes
+
+# Minimum lines number of a similarity.
+min-similarity-lines=4
+
+
+[SPELLING]
+
+# Limits count of emitted suggestions for spelling mistakes.
+max-spelling-suggestions=4
+
+# Spelling dictionary name. No available dictionaries : You need to install
+# both the python package and the system dependency for enchant to work..
+spelling-dict=
+
+# List of comma separated words that should be considered directives if they
+# appear at the beginning of a comment and should not be checked.
+spelling-ignore-comment-directives=fmt: on,fmt: off,noqa:,noqa,nosec,isort:skip,mypy:
+
+# List of comma separated words that should not be checked.
+spelling-ignore-words=
+
+# A path to a file that contains the private dictionary; one word per line.
+spelling-private-dict-file=
+
+# Tells whether to store unknown words to the private dictionary (see the
+# --spelling-private-dict-file option) instead of raising a message.
+spelling-store-unknown-words=no
+
+
+[STRING]
+
+# This flag controls whether inconsistent-quotes generates a warning when the
+# character used as a quote delimiter is used inconsistently within a module.
+check-quote-consistency=no
+
+# This flag controls whether the implicit-str-concat should generate a warning
+# on implicit string concatenation in sequences defined over several lines.
+check-str-concat-over-line-jumps=no
+
+
+[TYPECHECK]
+
+# List of decorators that produce context managers, such as
+# contextlib.contextmanager. Add to this list to register other decorators that
+# produce valid context managers.
+contextmanager-decorators=contextlib.contextmanager
+
+# List of members which are set dynamically and missed by pylint inference
+# system, and so shouldn't trigger E1101 when accessed. Python regular
+# expressions are accepted.
+generated-members=
+
+# Tells whether to warn about missing members when the owner of the attribute
+# is inferred to be None.
+ignore-none=yes
+
+# This flag controls whether pylint should warn about no-member and similar
+# checks whenever an opaque object is returned when inferring. The inference
+# can return multiple potential results while evaluating a Python object, but
+# some branches might not be evaluated, which results in partial inference. In
+# that case, it might be useful to still emit no-member and other checks for
+# the rest of the inferred objects.
+ignore-on-opaque-inference=yes
+
+# List of symbolic message names to ignore for Mixin members.
+ignored-checks-for-mixins=no-member,
+                          not-async-context-manager,
+                          not-context-manager,
+                          attribute-defined-outside-init
+
+# List of class names for which member attributes should not be checked (useful
+# for classes with dynamically set attributes). This supports the use of
+# qualified names.
+ignored-classes=optparse.Values,thread._local,_thread._local,argparse.Namespace
+
+# Show a hint with possible names when a member name was not found. The aspect
+# of finding the hint is based on edit distance.
+missing-member-hint=yes
+
+# The minimum edit distance a name should have in order to be considered a
+# similar match for a missing member name.
+missing-member-hint-distance=1
+
+# The total number of similar names that should be taken in consideration when
+# showing a hint for a missing member.
+missing-member-max-choices=1
+
+# Regex pattern to define which classes are considered mixins.
+mixin-class-rgx=.*[Mm]ixin
+
+# List of decorators that change the signature of a decorated function.
+signature-mutators=
+
+
+[VARIABLES]
+
+# List of additional names supposed to be defined in builtins. Remember that
+# you should avoid defining new builtins when possible.
+additional-builtins=
+
+# Tells whether unused global variables should be treated as a violation.
+allow-global-unused-variables=yes
+
+# List of names allowed to shadow builtins
+allowed-redefined-builtins=
+
+# List of strings which can identify a callback function by name. A callback
+# name must start or end with one of those strings.
+callbacks=cb_,
+          _cb
+
+# A regular expression matching the name of dummy variables (i.e. expected to
+# not be used).
+dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_
+
+# Argument names that match this expression will be ignored.
+ignored-argument-names=_.*|^ignored_|^unused_
+
+# Tells whether we should check for unused import in __init__ files.
+init-import=no
+
+# List of qualified module names which can have objects that can redefine
+# builtins.
+redefining-builtins-modules=six.moves,past.builtins,future.builtins,builtins,io
diff --git a/program/code/main.py b/program/code/main.py
index f81ba830..71b337d8 100644
--- a/program/code/main.py
+++ b/program/code/main.py
@@ -4,29 +4,51 @@
 
 
 def command_name_check(latex_string, command_name):
+    """
+    Checks if command name given from latex was spelled correctly
+    """
     if latex_string[1: (len(command_name) + 1)] != command_name:
         print(latex_string + "Error! command misspeled!")
         return "Error!"
-    return
+    return ""
 
 
 def generic_checks(latex_string):
+    """
+    Checks if string is given and whether latex parameters
+    ends with curly bracket
+    """
     if latex_string == "":
         print(latex_string + "Error! No input given to function")
         return "Error!"
     if "}" not in latex_string:
         print(latex_string + "Error! curly bracket not closed!")
         return "Error!"
-    return
+    return ""
 
 
 def generic_checks_command(latex_string):
+    """
+    In additon to generic checks it also checks if command starts with \
+    """
     if generic_checks(latex_string) == "Error!":
         return "Error!"
     if latex_string[0] != "\\":
         print(latex_string + "Error! has no slash at begining")
         return "Error!"
-    return
+    return ""
+
+
+def document_class_only_checks(latex_string):
+    """
+    Checks only errors connected to document class
+    """
+    if latex_string[len("\\documentclass{") - 1] != "{":
+        print(latex_string + "Error! curly bracket not opened!")
+        return "Error!"
+    if command_name_check(latex_string, "documentclass") == "Error!":
+        return "Error!"
+    return ""
 
 
 def document_class(latex_string):
@@ -36,13 +58,10 @@ def document_class(latex_string):
     """
     if generic_checks_command(latex_string) == "Error!":
         return "Error!"
-    if latex_string[len("\\documentclass{") - 1] != "{":
-        print(latex_string + "Error! curly bracket not opened!")
+    if document_class_only_checks(latex_string) == "Error!":
         return "Error!"
-    if command_name_check(latex_string, "documentclass") == "Error!":
-        return "Error!"
-    document_type = latex_string[len(
-        "\\documentclass{"): (len(latex_string) - 1)]
+    # document_type = latex_string[len(
+    #    "\\documentclass{"): (len(latex_string) - 1)]
     return "<!DOCTYPE html>"
 
 
@@ -81,24 +100,28 @@ def tabular_parameters(latex_string):
 
 
 def only_pipes_and_space(latex_string):
-    """Checks if latex string only contains | or " ", if yes returns True, if no returns false"""
-    return all(char == '|' or char == ' ' or char == '{' or char == '}' for char in latex_string)
+    """Checks if latex string only contains | or " "
+    if yes returns True, if no returns false"""
+    return all(char in ("|", " ", "{", "}") for char in latex_string)
 
 
 def main_tabular_parameters_loop(latex_string, simple_parameters_dictionary):
+    """
+    Converts simple and paragraph table parameters into html style code
+    """
     return_array = []
     i = 0
     latex_string_length = len(latex_string)
     while i < latex_string_length:
         character = latex_string[i]
-        if character in ['l', 'c', 'r', '|']:
+        if character in ["l", "c", "r", "|"]:
             return_array.append(
                 simple_parameters_dictionary.get(latex_string[i]))
             i += 1
             continue
-        if character in ['p', 'm', 'b']:
-            closing_bracket = latex_string.find('}', i + 1)
-            columns_string = latex_string[i:closing_bracket + 1]
+        if character in ["p", "m", "b"]:
+            closing_bracket = latex_string.find("}", i + 1)
+            columns_string = latex_string[i: closing_bracket + 1]
             result = tabular_columns_parameters(columns_string)
             if result == "Error!":
                 return result
@@ -109,57 +132,83 @@ def main_tabular_parameters_loop(latex_string, simple_parameters_dictionary):
     return return_array
 
 
-def tabular_required_parameters(latex_string):
+def tabular_required_errors(latex_string):
+    """
+    Runs generic checks and
+    checks if there are any parameters put to latex table
+    """
     if generic_checks(latex_string) == "Error!":
         return "Error!"
     if latex_string == "{}":
-        print("tabular_required_parameters, required table parameters are empty!:", latex_string)
+        print(
+            """tabular_required_parameters
+            required table parameters are empty!:""",
+            latex_string,
+        )
+        return "Error!"
+    return ""
+
+
+def tabular_required_parameters(latex_string):
+    """
+    Converts simple tabular parameters to html style commands
+    """
+    if tabular_required_errors(latex_string) == "Error!":
         return "Error!"
     simple_parameters_dictionary = {
         "l": "align='left'",
         "c": "align='center'",
         "r": "align='right'",
-        "|": "style='border-left: 1px solid black'"
+        "|": "style='border-left: 1px solid black'",
     }
     if only_pipes_and_space(latex_string):
-        print("tabular_required_parameters, required table parameters are only pipes and spaces!:", latex_string)
+        print(
+            """tabular_required_parameters,
+            required table parameters are only pipes and spaces!:""",
+            latex_string,
+        )
         return "Error!"
-    return main_tabular_parameters_loop(latex_string, simple_parameters_dictionary)
+    return main_tabular_parameters_loop(
+        latex_string, simple_parameters_dictionary)
 
 
 def length_conversions(latex_length):
+    """
+    Converts latex lengths to html lengths
+    """
     length_dictionary = {
         "pt": [1.3, "px"],
-
         "mm": [1, "mm"],
-
         "cm": [1, "cm"],
-
         "in": [1, "in"],
-
         "ex": [1, "ex"],
-
         "em": [1, "em"],
     }
     return length_dictionary.get(latex_length, "Error!")
 
 
 def tabular_columns_parameters(latex_string):
+    """
+    Handles tabular paragraph parameters and translates them to html style
+    """
     if generic_checks(latex_string) == "Error!":
         return "Error!"
     parameter_dictionary = {
         "p": "vertical-align: top;",
         "m": "vertical-align: middle;",
-        "b": "vertical-align: bottom;"
+        "b": "vertical-align: bottom;",
     }
     vertical_align_type = parameter_dictionary.get(latex_string[0], "Error!")
     if vertical_align_type == "Error!":
         print("tabular_columns_parameters, unknown parameter: ",
               latex_string[0])
         return "Error!"
-    if latex_string[1] != '{':
+    if latex_string[1] != "{":
         print(
-            "tabular_columns_parameters, parameter length does not start with {", latex_string)
+            """tabular_columns_parameters
+            parameter length does not start with {""",
+            latex_string,
+        )
         return "Error!"
     length_parameter_with_bracket = latex_string.partition("{")[2]
     length_parameter = length_parameter_with_bracket.partition("}")[0]
@@ -173,37 +222,55 @@ def tabular_columns_parameters(latex_string):
     length_unit = length_parameter[i:]
     conversed_unit = length_conversions(length_unit)
     if conversed_unit == "Error!":
-        print("tabular_columns_parameters, Unit could not be conversed!", latex_string)
+        print("""tabular_columns_parameters,
+        Unit could not be conversed!""", latex_string)
         return "Error!"
     final_length = round(float(length_value) * conversed_unit[0], 2)
-    return_string = "style='" + vertical_align_type + \
-        " width: " + str(final_length) + conversed_unit[1] + ";'"
+    return_string = (
+        "style='"
+        + vertical_align_type
+        + " width: "
+        + str(final_length)
+        + conversed_unit[1]
+        + ";'"
+    )
     return return_string
 
 
 def split_rows(latex_string):
+    """
+    Splits table row string into separate strings and puts them in array
+    """
     double_backslash = "\\"
     rows = latex_string.split(double_backslash)
     return rows
 
 
 def split_columns(table_row, column_count):
+    """
+    Splits table row columns into separate strings and puts them in array
+    """
     columns = table_row.split("&")
-    if len(columns) != column_count and columns != ['']:
-
+    if len(columns) != column_count and columns != [""]:
         return "Error!"
     return columns
 
 
 def translate_column(latex_column):
-    hline_string_literal = "\hline"
+    """
+    Translate insides of a single latex tabular column to html
+    """
+    hline_string_literal = "\\hline"
     replaced_hline = latex_column.replace(hline_string_literal, "<hr>")
-    replaced_newline = replaced_hline.replace('\newline', "<br>")
+    replaced_newline = replaced_hline.replace("\newline", "<br>")
     return replaced_newline
 
 
 def translate_inside_to_html(latex_table_inside, column_style):
-    return_string = "<html> <table>"
+    """
+    Translates entire table insides to html
+    """
+    return_string = "<table>"
     column_amount = 0
     line_string = "style='border-left: 1px solid black'"
     for style in column_style:
@@ -219,7 +286,9 @@ def translate_inside_to_html(latex_table_inside, column_style):
             return_string += "<td "
             if column_number >= len(column_style):
                 print(
-                    f"Error! column_number index: {column_number} is out of length of column_style: {column_style}")
+                    f"""Error! column_number index: {column_number}
+                    is out of length of column_style: {column_style}"""
+                )
                 return "Error!"
             current_style = column_style[column_number]
             while current_style == line_string:
@@ -233,45 +302,65 @@ def translate_inside_to_html(latex_table_inside, column_style):
             return_string += "</td>"
 
         return_string += "</tr>"
-    return_string += "  </table> </html>"
+    return_string += "</table>"
     return return_string
 
 
 def read_file(tex_filename):
-    tex_file = open(tex_filename, "r")
-    data = tex_file.read().replace('\n', '')
-    tex_file.close()
+    """
+    opens, reads and saves latex file
+    content into python string, then closes file
+    """
+    with open(tex_filename, "r", encoding="UTF-8") as tex_file:
+        data = tex_file.read().replace("\n", "")
+        tex_file.close()
     return data
 
 
 def read_document_class(latex_full_string):
-    document_class_index = latex_full_string.find("\documentclass")
+    """
+    Finds documentclass in latex file and checks function correctness
+    """
+    document_class_index = latex_full_string.find("\\documentclass")
     if document_class_index == -1:
         print("Main function error! documentclass not found")
         return "Error!"
     document_class_close_bracket = latex_full_string.find(
         "}", document_class_index)
-    document_class_string = latex_full_string[document_class_index:document_class_close_bracket + 1]
-    latex_full_string = latex_full_string[document_class_close_bracket + 1:len(
-        latex_full_string) - 1]
+    document_class_string = latex_full_string[
+        document_class_index: document_class_close_bracket + 1
+    ]
+    latex_full_string = latex_full_string[
+        document_class_close_bracket + 1: len(latex_full_string) - 1
+    ]
     return document_class(document_class_string), latex_full_string
 
 
 def read_begin_document(latex_full_string):
+    """
+    Finds LaTeX \begin{document} command and returns html counterpart to it
+    """
     begin_document_index = latex_full_string.find(r"\begin{document}")
     if begin_document_index == -1:
         print("read_begin_document error! begin{document not found")
         return "Error!", latex_full_string
     begin_document_close_bracket = latex_full_string.find(
         "}", begin_document_index)
-    begin_document_string = latex_full_string[begin_document_index:begin_document_close_bracket + 1]
-    latex_full_string = latex_full_string[begin_document_close_bracket + 1:len(
-        latex_full_string) - 1]
+    begin_document_string = latex_full_string[
+        begin_document_index: begin_document_close_bracket + 1
+    ]
+    latex_full_string = latex_full_string[
+        begin_document_close_bracket + 1: len(latex_full_string) - 1
+    ]
     return_string = begin_document(begin_document_string)
     return return_string, latex_full_string
 
 
 def read_start(html_string, data):
+    """
+    Finds, reads latex document class
+    and begin document and translates them to html
+    """
     document_class_result, data = read_document_class(data)
     if document_class_result == "Error!":
         return "Error!", data
@@ -285,24 +374,29 @@ def read_start(html_string, data):
 
 
 def handle_table_whole(html_string, data, table_start, table_end):
+    """
+    Reads entire table, handles its parameters
+    and insides and translates to html
+    """
     if table_start == -1 or table_end == -1:
         return html_string, data
     tabular_begin_string = r"\begin{tabular}"
-    tabular_end_string = r"\end{tabular}"
 
-    table_part = data[table_start:table_end+len(tabular_end_string)]
     parameters_start_index = data.find(
         "{", table_start + len(tabular_begin_string))
 
     parameters_end_index = data.find("}", parameters_start_index)
-    parameters_string = data[parameters_start_index:parameters_end_index+1]
+    parameters_string = data[parameters_start_index: parameters_end_index + 1]
     parameters_array = tabular_required_parameters(parameters_string)
-    inside_table = data[parameters_end_index+1:table_end]
+    inside_table = data[parameters_end_index + 1: table_end]
     html_string += translate_inside_to_html(inside_table, parameters_array)
     return html_string
 
 
 def handle_insides(html_string, data):
+    """
+    Finds inside of table and translates them to html
+    """
     tabular_index = 0
     tabular_end_string = r"\end{tabular}"
     while tabular_index != -1:
@@ -312,19 +406,25 @@ def handle_insides(html_string, data):
             return html_string, data
         html_string += data[0:tabular_index_start]
 
-        html_string = handle_table_whole(html_string, data,
-                                         tabular_index_start, tabular_index_end)
-        data = data[tabular_index_end + len(tabular_end_string):len(data)]
+        html_string = handle_table_whole(
+            html_string, data, tabular_index_start, tabular_index_end
+        )
+        data = data[tabular_index_end + len(tabular_end_string): len(data)]
         tabular_index = tabular_index_end
     return html_string, data
 
 
 def main_function(tex_filename):
+    """
+    Ran by default by program,
+    gets latex file and translates to html
+    """
     data = read_file(tex_filename)
     html_string = ""
     html_string, data = read_start(html_string, data)
     if html_string == "Error!":
-        print("main_function error! when reading documentclass or begin document")
+        print("""main_function error!
+        when reading documentclass or begin document""")
         return "Error"
     html_string, data = handle_insides(html_string, data)
 
@@ -332,7 +432,7 @@ def main_function(tex_filename):
 
 
 if __name__ == "__main__":
-    tex_filename = "texfile.tex"
-    final_html = main_function(tex_filename)
-    f = open(tex_filename + ".html", "w")
-    f.write(final_html)
+    TEX_FILENAME = "texfile.tex"
+    FINAL_HTML = main_function(TEX_FILENAME)
+    with open(TEX_FILENAME + ".html", "w", encoding="UTF-8") as f:
+        f.write(FINAL_HTML)
diff --git a/program/unit_tests/test_code/test_translate_inside_to_html.py b/program/unit_tests/test_code/test_translate_inside_to_html.py
index 5979c737..db469183 100644
--- a/program/unit_tests/test_code/test_translate_inside_to_html.py
+++ b/program/unit_tests/test_code/test_translate_inside_to_html.py
@@ -6,7 +6,7 @@ def given_correct_then_correct():
     latex_string = "test & 2 & test \\ 4 & 5 & 6 \\"
     parameters_string = "{ l | c | r }"
     column_styles = tabular_required_parameters(parameters_string)
-    assert translate_inside_to_html(latex_string, column_styles) == "<html> <table><tr><td align='left'>test </td><td style='border-left: 1px solid black'align='center'> 2 </td><td style='border-left: 1px solid black'align='right'> test </td></tr><tr><td align='left'> 4 </td><td style='border-left: 1px solid black'align='center'> 5 </td><td style='border-left: 1px solid black'align='right'> 6 </td></tr><tr><td align='left'></td></tr>  </table> </html>"
+    assert translate_inside_to_html(latex_string, column_styles) == "<table><tr><td align='left'>test </td><td style='border-left: 1px solid black'align='center'> 2 </td><td style='border-left: 1px solid black'align='right'> test </td></tr><tr><td align='left'> 4 </td><td style='border-left: 1px solid black'align='center'> 5 </td><td style='border-left: 1px solid black'align='right'> 6 </td></tr><tr><td align='left'></td></tr></table>"
 
 
 def test_translate_inside_to_html():