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Małgorzata Staniszewska
2,431 Pointsgeneral question about number of variables
I attach two different versions of the same program. My question is: how many variables should I create? I realized that I tend to built a kind of "shorcuts" like in the first example. But on videos you show rather the second approach. Can you give advice?
# The first half of the string, rounded with round(), should be lowercased.
# The second half should be uppercased.
# E.g. "Treehouse" should come back as "treeHOUSE"
def sillycase(string):
half = round(len(string)/2)
return(string[:half].lower() + string [half:].upper())
def sillycase(string):
half = round(len(string)/2)
string_1 = string[:half].lower()
string_2 = string[half:].upper()
new_string = string_1 + string_2
return(new_string)
1 Answer
Andreas cormack
Python Web Development Techdegree Graduate 33,011 PointsHi Małgorzata Staniszewska
The general rule is to solve a problem with the least amount of code. So both your examples are correct although the second example uses 5 lines of code, making the first example much better. If you need to use a variable to store the string you could reduce the amount of code like so.
def sillycase(string):
half = round(len(string)/2)
new_string = string[:half].lower() + string[half:].upper()
return(new_string)
The amount of variables you use will depend on code and problem you are trying to achieve. One thing to remember is not to repeat code i.e follow the principal of DRY or don't repeat yourself.