Hi guys, i'm new to the Mac OS X world so i have to ask you this. I have the default python 2.6.1 installed as /usr/bin/python and the 3.1.2 as /usr/local/bin/python3.1 . Considering that i use only 3.x syntax, is it safe to replace the default interpreter (2.6) with the 3.1 one (python-config included) using symlinks (and removing old ...
I've written a pure-Python module for Python 3.0/3.1 which I'd also like to make it compatible with 2.x (probably just 2.6/2.7) in order to make it available to the widest possible audience. The module is concerned with reading and writing a set of related file formats, so the differences between 2.x and 3.x versions would be slight — e...
I'm querying a database and archiving the results using Python, and I'm trying to compress the data as I write it to the log files. I'm having some problems with it, though. My code looks like this: log_file = codecs.open(archive_file, 'w', 'bz2') for id, f1, f2, f3 in cursor: log_file.write('%s %s %s %s\n' % (id, f1 or 'NULL', f2...
Lisp's apply is for Lisp's APPLY is for calling functions with computed argument lists stored in lists.(Modified from Rainer's comment) For example, the following code changes (list 1 2 3) to (+ 1 2 3). (apply #'+ '(1 2 3)) However, Python's apply does what Lisp's funcall does, except for some minor differences (input is given as t...
The error which i am getting is Traceback (most recent call last): File "imp.py", line 52, in <module> mode = getMode() File "imp.py", line 8, in getMode mode = input().lower() File "<string>", line 1, in <module> NameError: name 'encrypt' is not defined Below is the code. # Caesar Cipher MAX_KEY_SIZE = 26 def getMod...
I'm trying to parse dates with regex, using groups, but python is returning empty lists. I'm not doing anything fancy, just 12/25/10 sort of stuff. I want it to reject 12/25-10 though. date = re.compile("\d{1,2}([/.-])\d{1,2}\1\d{2}") I've tried online regex libraries, but their solutions don't seem to run either. Any ideas? Sampl...
i want to change the value of a variable within a for loop, but then have the new preserved variable changed when the loop finishes my attempt (kinda simplified from what i'm actually doing) SNP is a list and compar_1 is a list of lists line_1 = empty_row for SNP1 in compar_1: global line_1 if SNP[3] == SNP1[3] compar...
Disclaimer: I'm looking for a Python 2.6 solution, if there is one. I'm looking for a function that returns a single value when passed a single value, or that returns a sequence when passed multiple values: >>> a = foo(1) 2 >>> b, c = foo(2, 5) >>> b 3 >>> c 6 To be clear, this is in an effort to make some function calls simply look ...
I have some python code that's throwing a KeyError exception. So far I haven't been able to reproduce outside of the operating environment, so I can't post a reduced test case here. The code that's raising the exception is iterating through a loop like this: for k in d.keys(): if condition: del d[k] The del[k] line throw...