[FIXED] Error when executing line, outside loop in Python Interpreter

Issue

I was trying some stuff out in the python interpreter [3.10] and wanted to execute a for loop:

If I execute the following code on python:

>>> for i in range(4):
...     print(i, end = ': ')
... print('\n')

I get an error:

  File "<stdin>", line 3
    print('\n')
    ^^^^^
SyntaxError: invalid syntax

However if I execute the same code in ipython, there are no errors:

In [1]: for i in range(4):
   ...:     print(i, end = ': ')
   ...: print('\n')

Output:

0: 1: 2: 3:

Solution

You must only give the python interpreter one statement at a time.

This might be a code block, in which case it will wait for you to dedent before executing.

But including the second statement print('\n') is invalid input.

On the other hand, in a Python program, executed from a file, you can have multiple statements. This accounts for the difference in behavior.

In short: provide an extra return before print('\n') so the interpreter can execute your first statement before you move on to the next.

Answered By - BadZen