在 Git Z7024FF0860DEC6AB1519A3F71C7D879 的 python 文件中运行 function

Question

I have a python file called lab01.py and it contains two functions

def both_positive(a, b):
     return a > 0 and b > 0

def sum_digits(x):
     """
     Sum all the digits of x.
     """
     ans = 0
     num = str(x)
     for ele in num:
         ans += eval(ele)
return ans

I need to print out the output of sum_digits(x) function in Git Bash. Here is my command line I entered

$ cd ~/desktop/programming/lab01
$ python -c 'import lab01; print lab01.sum_digits(10)'

The first command line runs successfully but I got a SyntaxError for the second line. Any help?

Answer 1

Try adding the parenthesis to the print function:

$ python -c 'import lab01; print(lab01.sum_digits(10))'

The syntax without the parenthesis is for python 2, and your Git Bash emulator should be running python 3 if that's what you installed on your computer.

Python 2 print statement was replaced with a function (hence the parenthesis) in Python 3. So you need to use print() .

edit: also, if that's the code you are using for the lab01.py file, your return seems to be outside the function block.