Nested for loops and print statements

Mon Sep 26 03:21:11 EDT 2016

Cai Gengyang <gengyangcai at gmail.com> writes:
> So what do i need to do to correct the error ?
>> Regards
>>> On Monday, September 26, 2016 at 2:48:16 PM UTC+8, Terry Reedy wrote:
>> On 9/26/2016 1:59 AM, Cai Gengyang wrote:
>> > Why is it that you need a print() at the end to create the table for example 1:
>> >
>> > Example 1 ---
>> >
>> >>>> for row in range(10):
>> > for column in range(10):
>> > print("*",end=" ")
>> > # Print a blank line for next row
>> > print()
>>>> These indents are either 4 or 8 spaces.
>>>> The print provides a carriage return.
>> Each line ends with a space.
>>>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>> > * * * * * * * * * *
>>>> One can avoid both extra print and spaces with
>>>> for row in range(10):
>> for column in range(10):
>> print("*", end=" " if column<9 else '\n')
>>>> # or
>> for row in range(10):
>> print(' '.join(['*']*10))
>> # or
>> print((' '.join(['*']*10)+'\n')*10)
>>>> # or
>> for row in range(10):
>> print('* '*9 + '*')
>> # or
>> print(('* '*9 + '*\n')*10)
>>>>>> > but not for Example 2 ---
>> >
>> > for row in range(10):
>> > print("*",end=" ")
>> >
>> > * * * * * * * * * *
>> >
>> > When I try to do example 1 without the print() statement at the end, I get this error :
>> >
>> > for row in range(10):
>> > for column in range(10):
>> > 	print("*",end=" ")
>>>> These indents are 4 spaces and 1 tabs.
>>>> > SyntaxError: inconsistent use of tabs and spaces in indentation
>>>> Because you mixed tabs and spaces. Has nothing to do with print statement.
>>>>>> -- 
>> Terry Jan Reedy

Reindent your lines.