Re: gett error message: TypeError: 'int' object is not callable
Friðrik Már Jónsson wrote: Hi Rhodri, It's only really a pitfall if you try to use the built-in after you've redefined it. That's the thing to keep an eye open for. You're right, but in cases where you're editing a codebase which you didn't author entirely by yourself you may not be aware of that. That said, if the codebase you're working on is structured (short, concise methods) you should be working with small, consumable scopes you can inhale in entirety before modifying. Regards, Friðrik Már But if you are responsible for a large codebase that you don't write yourself, it is doubtful that you're a real newbie. -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Simon Forman wrote: On Thu, Jul 9, 2009 at 9:42 AM, Nicknleio...@gmail.com wrote: snip fields = line.split() for i in range(len(fields)): fields[i] = float(fields[i]) instead of the above code you could say: fields = [float(n) for n in in line.split()] Have fun getting back into python! :] (A lot has changed in the last few years) fields = [float(n) for n in in line.split()] File stdin, line 1 fields = [float(n) for n in in line.split()] ^ SyntaxError: invalid syntax s/in in/in/ -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
On Jul 9, 8:22 pm, Paul Rubin http://phr...@nospam.invalid wrote: Nick nleio...@gmail.com writes: text = file.readlines() len = len(text) fields = text[1].split() Is that intended to split the first line of the file? Remember that arrays in python begin at index 0. no the '1st line' is garbled meta data, but thanks man -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
On Thu, 2009-07-09 at 13:53 +, Friðrik Már Jónsson wrote: Look at: len = len(text) You're overriding `len` (a built-in method), with an integer (`len(text)`). You then call: for i in range(len(fields)): But `len` is no longer a callable, but merely an integer. Regards, Friðrik Már P.S. While this is a fairly obvious problem it's usually a good idea to post working code and a traceback when requesting help. While we're on the subject of good question posting form: The body of your post should contain all relevant information. Please don't make readers look back at the subject heading for the statement of the problem. Duplicating the statement of the problem in the subject and the body is ok, but it really ought to be in the body. -- http://mail.python.org/mailman/listinfo/python-list
gett error message: TypeError: 'int' object is not callable
I've seen a lot of posts on this problem, but none seems to help. Here is the code: /code file = open(prefix1) text = file.readlines() len = len(text) fields = text[1].split() num_rows = int(fields[1]) num_cols = int(fields[2]) U1_matrix = [] print fields print repr(fields) print len(fields) for line in text[2: num_rows+2]: fields = line.split() #print fields, fields, line for i in range(len(fields)): fields[i] = float(fields[i]) U1_matrix.append(fields) /*code prefix is a space/line delimited ascii file that represents a 2D matrix. i'm trying to read in 2 matrices from different files, strip away the header stuff and then take the dot product of the 2 matrices. any help is much appreciated. thanks, nick -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Hi, Nick schrieb: I've seen a lot of posts on this problem, but none seems to help. Could you please post a sample input file and the exact error message? Thanks Lutz -- Strike Out ⇒ http://www.fourmilab.ch/documents/strikeout -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Look at: len = len(text) You're overriding `len` (a built-in method), with an integer (`len(text)`). You then call: for i in range(len(fields)): But `len` is no longer a callable, but merely an integer. Regards, Friðrik Már P.S. While this is a fairly obvious problem it's usually a good idea to post working code and a traceback when requesting help. -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Nick nleio...@gmail.com wrote in message news:e54c4461-c0b7-42fb-8542-cefd7bf5f...@h18g2000yqj.googlegroups.com... file = open(prefix1) text = file.readlines() len = len(text) You have redefined two built-in functions file and len in the first three lines. This is usually considered poor practice. Stick to meaningless variable names, it's safer (only joking). TypeError: 'int' object is not callable. This means that something you thought was a function is in fact an integer. It's helpful to post/look at the line number of the error; how is this line failing, is much easier to answer than how is my program failing. print len(fields) Here len is an integer, because you redefined it in line 3. I'm guessing this is the problem. -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
On Jul 9, 10:02 am, Richard Brodie r.bro...@rl.ac.uk wrote: Nick nleio...@gmail.com wrote in message news:e54c4461-c0b7-42fb-8542-cefd7bf5f...@h18g2000yqj.googlegroups.com... file = open(prefix1) text = file.readlines() len = len(text) You have redefined two built-in functions file and len in the first three lines. This is usually considered poor practice. Stick to meaningless variable names, it's safer (only joking). TypeError: 'int' object is not callable. This means that something you thought was a function is in fact an integer. It's helpful to post/look at the line number of the error; how is this line failing, is much easier to answer than how is my program failing. print len(fields) Here len is an integer, because you redefined it in line 3. I'm guessing this is the problem. thanks for spotting the obvious errors, its my 2nd day programming python in about 3 years. fridrick, code should be workable with the exception of the errors...thats the whole program Thanks again for all the help problem fixed -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Nick a écrit : I've seen a lot of posts on this problem, but none seems to help. Here is the code: /code file = open(prefix1) shadows the builtin 'file' type. text = file.readlines() len = len(text) shadows the builtin 'len' function. fields = text[1].split() num_rows = int(fields[1]) num_cols = int(fields[2]) U1_matrix = [] print fields print repr(fields) print len(fields) And here's your problem - 'len' is now bound to the result of the previous call to len(text). Hint : Python's functions, classes and modules are objects too, and don't live in a distinct namespace. So _don't_ use builtin's types / functions / etc names as identifiers. HTH -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Nick wrote: I've seen a lot of posts on this problem, but none seems to help. Here is the code: /code file = open(prefix1) text = file.readlines() len = len(text) fields = text[1].split() num_rows = int(fields[1]) num_cols = int(fields[2]) U1_matrix = [] print fields print repr(fields) print len(fields) for line in text[2: num_rows+2]: fields = line.split() #print fields, fields, line for i in range(len(fields)): fields[i] = float(fields[i]) U1_matrix.append(fields) /*code prefix is a space/line delimited ascii file that represents a 2D matrix. i'm trying to read in 2 matrices from different files, strip away the header stuff and then take the dot product of the 2 matrices. any help is much appreciated. thanks, nick You have at least two problems with that code, one of which is causing your symptom. Both 'file' and 'len' are defined in the standard library, and shouldn't be redefined in your code. And your problem is that after you redefined 'len', you then tried to use it in its original meaning. Rename those two and you'll get further. And it would have saved lots of time for lots of people if you included sample data and the actual error message, marking where in your code it occurs. Once you know it's complaining about the len() call, it's not too hard to figure out that the problem was you rebound the len attribute from a function to an integer. Traceback (most recent call last): File M:\Programming\Python\sources\dummy\echo2.py, line 21, in module print len(fields) TypeError: 'int' object is not callable DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Previously, I wrote: P.S. While this is a fairly obvious problem it's usually a good idea to post working code and a traceback when requesting help. Nick wrote: thanks for spotting the obvious errors, its my 2nd day programming python in about 3 years. I'm sorry, my saying it was obvious may have come off a little arrogant. My clumsily delivered point was that because it was a small snippet of code it didn't take much time to run through for someone who codes daily with Python. What you did there was a perfectly ordinary thing to do until experience teaches you how Python does things. :) fridrick, code should be workable with the exception of the errors...thats the whole program You're right, I failed to say it explicitely but I was referring to the input file. In some cases, albeit not this one, problems can exist in parsing gotchas. Regards, Friðrik Már -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
no problem, i understand, i haven't coded anything in literally 2 years, but it was a simple and pretty obvious mistake. thanks for all your help, nick On Jul 9, 11:30 am, Friðrik Már Jónsson frid...@pyth.net wrote: Previously, I wrote: P.S. While this is a fairly obvious problem it's usually a good idea to post working code and a traceback when requesting help. Nick wrote: thanks for spotting the obvious errors, its my 2nd day programming python in about 3 years. I'm sorry, my saying it was obvious may have come off a little arrogant. My clumsily delivered point was that because it was a small snippet of code it didn't take much time to run through for someone who codes daily with Python. What you did there was a perfectly ordinary thing to do until experience teaches you how Python does things. :) fridrick, code should be workable with the exception of the errors...thats the whole program You're right, I failed to say it explicitely but I was referring to the input file. In some cases, albeit not this one, problems can exist in parsing gotchas. Regards, Friðrik Már -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Hi, Do you know a good way to avoid running into this problem? It makes sense to suggest not calling variables the same names as built-in functions, but that's hard for a new python programmer who doesn't already know what all the built-in functions are. Over time a programmer will learn which names to avoid, but it's a bit of a pitfall early on. Cheers, Tom 2009/7/9 Richard Brodie r.bro...@rl.ac.uk: Nick nleio...@gmail.com wrote in message news:e54c4461-c0b7-42fb-8542-cefd7bf5f...@h18g2000yqj.googlegroups.com... file = open(prefix1) text = file.readlines() len = len(text) You have redefined two built-in functions file and len in the first three lines. This is usually considered poor practice. Stick to meaningless variable names, it's safer (only joking). TypeError: 'int' object is not callable. This means that something you thought was a function is in fact an integer. It's helpful to post/look at the line number of the error; how is this line failing, is much easier to answer than how is my program failing. print len(fields) Here len is an integer, because you redefined it in line 3. I'm guessing this is the problem. -- http://mail.python.org/mailman/listinfo/python-list -- http://www.kiloday.com http://www.fourstopspast.com -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Tom Kermode tkerm...@gmail.com wrote in message news:mailman.2903.1247155607.8015.python-l...@python.org... Do you know a good way to avoid running into this problem? It makes sense to suggest not calling variables the same names as built-in functions, but that's hard for a new python programmer who doesn't already know what all the built-in functions are. No, but not redefining the ones you actually use is a good start. Learning to understand the traceback is the more important lesson, IMHO. It takes a while to tune into what error messages are trying to tell you; even when you stop making newbie mistakes, you're going to have to deal with runtime errors from time to time. -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Tom Kermode wrote: Do you know a good way to avoid running into this problem? It makes sense to suggest not calling variables the same names as built-in functions, but that's hard for a new python programmer who doesn't already know what all the built-in functions are. One way is using a code checker like PyChecker[1]. This neat software for finding bugs will check for lots of other pitfalls too, but you can filter it down to what you need if you're only interested in this one. I don't use an IDE, but this would seem like something for an IDE[2] to support if you're into that kind of magic. Regards, Friðrik Már [1] http://pychecker.sourceforge.net/ [2] http://wiki.python.org/moin/IntegratedDevelopmentEnvironments -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
On Thu, 09 Jul 2009 17:06:45 +0100, Tom Kermode tkerm...@gmail.com wrote: Hi, Do you know a good way to avoid running into this problem? It makes sense to suggest not calling variables the same names as built-in functions, but that's hard for a new python programmer who doesn't already know what all the built-in functions are. Over time a programmer will learn which names to avoid, but it's a bit of a pitfall early on. It's only really a pitfall if you try to use the built-in after you've redefined it. That's the thing to keep an eye open for. -- Rhodri James *-* Wildebeest Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Hi Rhodri, It's only really a pitfall if you try to use the built-in after you've redefined it. That's the thing to keep an eye open for. You're right, but in cases where you're editing a codebase which you didn't author entirely by yourself you may not be aware of that. That said, if the codebase you're working on is structured (short, concise methods) you should be working with small, consumable scopes you can inhale in entirety before modifying. Regards, Friðrik Már -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
On Thu, Jul 9, 2009 at 9:42 AM, Nicknleio...@gmail.com wrote: snip fields = line.split() for i in range(len(fields)): fields[i] = float(fields[i]) instead of the above code you could say: fields = [float(n) for n in in line.split()] Have fun getting back into python! :] (A lot has changed in the last few years) HTH, ~Simon -- http://mail.python.org/mailman/listinfo/python-list
Re: gett error message: TypeError: 'int' object is not callable
Nick nleio...@gmail.com writes: text = file.readlines() len = len(text) fields = text[1].split() Is that intended to split the first line of the file? Remember that arrays in python begin at index 0. -- http://mail.python.org/mailman/listinfo/python-list
