On Sat, Oct 1, 2016 at 2:02 AM, Alan Gauld via Tutor <tutor@python.org> wrote:
> On 01/10/16 05:24, boB Stepp wrote:
>
>> ===============================================================================
>> '''Exerise 3.1 from "Think Python 2" by Allen Downey.
>>
>> This module will take a string and right justify it so that the last
>> character
>> of the line will fall in column 70 of the display. The results will be
>> printed to stdout.'''
>>
>> def right_justify(a_string):
> <snip>
>> def print_msgs(*msgs):
>> '''Prints messages to stdout.'''
>>
>> for msg in msgs:
>> print(msg)
>>
>> def main(input_strings):
>> '''Run main program.'''
>>
>> print('0123456789' * 7) # Print a number guide to check length of
>> line.
>> for input_string in input_strings:
>> print_msgs(*right_justify(input_string))
>
> Do you need print_msgs()?
> Won't it work the same with
>
> print(right_justify(input_string))
>
> You are only feeding one line at a time into the print msgs.
[snip]
> But I think I'd just leave it as you have it but
> without the print_msgs()...
I would still need to unpack the arguments returned by right_justify()
that get fed to print():
print(*right_justify(input_string))
And I would have to add an additional "\n" to msg in the else clause
of right_justify():
msg = ("The string has too many characters (> 70)!\n" +
"Only a partial, 70 character line will be returned.\n")
so that the result formats the same as the original intent. This
gives me main() now as:
def main(input_strings):
'''Run main program.'''
print('0123456789' * 7) # Print a number guide to check length of line.
for input_string in input_strings:
print(*right_justify(input_string))
Doing this did not occur to me because I was blind to treating
print(*args) like any other function in regards to argument unpacking.
One of the many wonderful things about Python is its consistency!
Thanks, Alan!
--
boB
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