Programming Forums > Script Programming > Python

dezza · Apr 4th, 2005, 4:10 PM

http://ibiblio.org/obp/thinkCS/pytho...h/chap08.htm#3

I'm trying to complete the exercise in this step, can you help me out?

..

I've tried but cannot think of any good methods to do it.

Another thing

How do I get "return" to print when running the code as script? I know that you can see the True and False in the interpreter, but can you make it print the true/false statement when running it as a script (e.g. $ python script.py) ..

I need it in this case:

(Toggle Plain Text)

import string
def isLower2(ch):
  return ch in string.lowercase

Cerulean · Apr 4th, 2005, 7:13 PM

Using the above example you'd just do a `print isLower2("foo")` or whatever.

dezza · Apr 5th, 2005, 8:21 AM

Thank you Cerulean, anyone who can help me with the excersise?

sykkn · Apr 5th, 2005, 10:23 AM

I'm pretty sure they want you to take the example and print the length rather than the value ....

(Toggle Plain Text)

horsemen = ["war", "famine", "pestilence", "death"] 

i = 0 
while i < len(horsemen): 
    print len(horsemen[i])
    i = i + 1

dezza · Apr 5th, 2005, 11:47 AM

['spam!', 1, ['Brie', 'Roquefort', 'Pol le Veq'], [1, 2, 3]] ..

Thank you, but this is the previous list, just above the exercise, how could I do the lenght thing on this one? It won't allow me if I use the same code as above with the list content of above ..

al1986 · Apr 5th, 2005, 12:16 PM

If I understand your problem correctly, you can't find the length of each item in the list due to the type of one of the items. Item #2 is an integer, and calling the len function with an integer argument raises a TypeError.

If the nested list was changed to:
['spam!', [1], ['Brie', 'Roquefort', 'Pol le Veq'], [1, 2, 3]]

(i.e. replace '1' with a list containing a single item, '1') you could print the length of each element by doing:

(Toggle Plain Text)

for x in l2:
    print len(x)

Hope this helps!

Apr 4th, 2005, 4:10 PM	#1
dezza Newbie Join Date: Mar 2005 Location: Denmark Posts: 16 Rep Power: 0	Count lenght of list inside list, how to print returns http://ibiblio.org/obp/thinkCS/pytho...h/chap08.htm#3 I'm trying to complete the exercise in this step, can you help me out? .. I've tried but cannot think of any good methods to do it. Another thing How do I get "return" to print when running the code as script? I know that you can see the True and False in the interpreter, but can you make it print the true/false statement when running it as a script (e.g. $ python script.py) .. I need it in this case: (Toggle Plain Text) import string def isLower2(ch): return ch in string.lowercase import string def isLower2(ch): return ch in string.lowercase __________________ Come in and have a talk! #programmingforums @ Freenode Specialities: Linux, XHTML/HTML and CSS. Learning: Python Folding@Home Stats System Requirements: Windows 9x/ME/2000/XP or better Okay, that makes it run on Linux right?

Apr 5th, 2005, 10:23 AM	#4
sykkn Hobbyist Programmer Join Date: Apr 2004 Location: Texas Posts: 106 Rep Power: 5	I'm pretty sure they want you to take the example and print the length rather than the value .... (Toggle Plain Text) horsemen = ["war", "famine", "pestilence", "death"] i = 0 while i < len(horsemen): print len(horsemen[i]) i = i + 1 horsemen = ["war", "famine", "pestilence", "death"] i = 0 while i < len(horsemen): print len(horsemen[i]) i = i + 1

Apr 5th, 2005, 11:47 AM	#5
dezza Newbie Join Date: Mar 2005 Location: Denmark Posts: 16 Rep Power: 0	['spam!', 1, ['Brie', 'Roquefort', 'Pol le Veq'], [1, 2, 3]] .. Thank you, but this is the previous list, just above the exercise, how could I do the lenght thing on this one? It won't allow me if I use the same code as above with the list content of above .. __________________ Come in and have a talk! #programmingforums @ Freenode Specialities: Linux, XHTML/HTML and CSS. Learning: Python Folding@Home Stats System Requirements: Windows 9x/ME/2000/XP or better Okay, that makes it run on Linux right?

Apr 5th, 2005, 12:16 PM	#6
al1986 Newbie Join Date: Feb 2005 Posts: 24 Rep Power: 0	If I understand your problem correctly, you can't find the length of each item in the list due to the type of one of the items. Item #2 is an integer, and calling the len function with an integer argument raises a TypeError. If the nested list was changed to: ['spam!', [1], ['Brie', 'Roquefort', 'Pol le Veq'], [1, 2, 3]] (i.e. replace '1' with a list containing a single item, '1') you could print the length of each element by doing: (Toggle Plain Text) for x in l2: print len(x) for x in l2: print len(x) Hope this helps!

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Apr 4th, 2005, 7:13 PM	#2
Cerulean Professional Programmer Join Date: Apr 2005 Location: London, England Posts: 459 Rep Power: 4	Using the above example you'd just do a `print isLower2("foo")` or whatever.

Apr 5th, 2005, 8:21 AM	#3
dezza Newbie Join Date: Mar 2005 Location: Denmark Posts: 16 Rep Power: 0	Thank you Cerulean, anyone who can help me with the excersise? __________________ Come in and have a talk! #programmingforums @ Freenode Specialities: Linux, XHTML/HTML and CSS. Learning: Python Folding@Home Stats System Requirements: Windows 9x/ME/2000/XP or better Okay, that makes it run on Linux right?

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Programming Forums > Script Programming > Python

Count lenght of list inside list, how to print returns