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Python Python Collections (2016, retired 2019) Tuples Stringcases

Posted by thomas2017
thomas2017
1,342 Points

When to wrap str() around varibables?

Hi, I was wondering when do we need to use str()?
I got this exercise to work using str() & without using str(). I can only think of its use when a user insert an input and str should be wrapped around the variable in case user type in a number.

Are there other occasions when str() should be used?

stringcases.py 
def stringcase(x)
return(str(x.upper(), str(x.lower()), str(x.title()), x[::-1]))

1 Answer

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

The use of "str" is primarily for when you have something that is not a string and you want a string that represents it. This is not the case for user input, because the return value from the "input" function is always a string (but you might convert it into a number).

As you noticed, since this exercise only involves strings and functions that return strings, "str" is not needed.