Script which initiate the docstring documentation in a given python file if it is not already existing.
positional arguments: input_file path of the python file
optional arguments: -h, --help show this help message and exit
Example:
# to initialize docstring on AnyPyFile.py file:
python createDocStringHelper AnyPyFile.py
# to initialize docstring on all py file of project1 project:
python createDocStringHelper project1