negation - Read For Learn

Multiplication function with recursion in Python

You are trying to call n(m+1) in your elif and else block, since you say n is an integer, this is the problem, you should be calling mult() function recursively sending n and m+1 or m-1 as parameters. Another issue is that you should convert the result of n – mult(n, m+1) to negative before … Read more

Negation in Python

The negation operator in Python is not. Therefore just replace your ! with not. For your example, do this: For your specific example (as Neil said in the comments), you don’t have to use the subprocess module, you can simply use os.mkdir() to get the result you need, with added exception handling goodness. Example: