grammar.py

import language_tool_python
tool = language_tool_python.LanguageTool('en-US')


def checkGrammar(text):
    ''' Checks for grammatical errors and returns corrections'''
    matches = tool.check(text)
    my_mistakes = []
    my_corrections = []
    start_positions = []
    end_positions = []
    for rules in matches:
        if len(rules.replacements) > 0:
            start_positions.append(rules.offset)
            end_positions.append(rules.errorLength+rules.offset)
            my_mistakes.append(
                text[rules.offset:rules.errorLength+rules.offset])
            my_corrections.append(rules.replacements[0])
    my_new_text = list(text)

    for m in range(len(start_positions)):
        for i in range(len(text)):
            my_new_text[start_positions[m]] = my_corrections[m]
            if (i > start_positions[m] and i < end_positions[m]):
                my_new_text[i] = ""

    my_new_text = "".join(my_new_text)

    print(my_new_text)
    print(list(zip(my_mistakes, my_corrections)))

    return [my_new_text, my_mistakes]