Learn Python List Comprehension by Building a Case Converter Program - Step 20

Python
1

Tell us what’s happening:

My thing it saying to add an if clause with the condition char.isupper() to your list comprehension. I saw that it said not use an else only an if but if you delete the else part it says you need an else.

Your code so far

def convert_to_snake_case(pascal_or_camel_cased_string):
    # snake_cased_char_list = []
    # for char in pascal_or_camel_cased_string:
    #     if char.isupper():
    #       converted_character = '_' + char.lower()
    #       snake_cased_char_list.append(converted_character)
    #     else:
    #         snake_cased_char_list.append(char)
    # snake_cased_string = ''.join(snake_cased_char_list)
    # clean_snake_cased_string = snake_cased_string.strip('_')

    # return clean_snake_cased_string

# User Editable Region

    #User Editable Zone
    snake_cased_char_list = ['_' + char.lower() if char.isupper() else char for char in pascal_or_camel_cased_string]
    #User Editable Zone

# User Editable Region

    return ''.join(snake_cased_char_list).strip('_')

def main():
    print(convert_to_snake_case('aLongAndComplexString'))

main()

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Challenge Information:

Learn Python List Comprehension by Building a Case Converter Program - Step 20

2

Hi @shravanregunath112

Try adding the if statement at the end of the list comprehension.

Happy coding

3

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