No follow up value in command line argument in Python

Question

I am using argparse module in my Python code for command line arguments. I have some arguments that have some follow up values, ex. -x <value> . I have a situation in which follow up value is not required but I am not able to understand how do I implement it in the code.
The following can be the situations:
python abc.py -x 123 -f or python abc.py -x 123
-f is not compulsory but if it is given, no follow up value is required.

Answer 1

Have you tried using action="store_true" in add_argument . This makes the argument take no follow up value and if it is present then it stores true for what ever variable you specify in dest variable of add_argument . See argparse store options.