When I first started messing around with python strings and unicode, It took me awhile to understand the jargon of decode and encode too, so here’s my post from here that may help: Think of decoding as what you do to go from a regular bytestring to unicode and encoding as what you do to … Read more
A funny way I just thought of is to delete the variable: def f(foo, unused1, unused2, unused3): del unused1, unused2, unused3 return foo This has numerous advantages: The unused variable can still be used when calling the function both as a positional argument and as a keyword argument. If you start to use it later, … Read more
There’s no built-in method for doing this in Python 2. If you need this, you need to write a prepend() method/function that operates on the OrderedDict internals with O(1) complexity. For Python 3.2 and later, you should use the move_to_end method. The method accepts a last argument which indicates whether the element will be moved … Read more
The error that you are getting is because you have installed the wrong component of matplotlib (there are the 32 bit and 64 bit components). This page provides you all binaries (32bit,64bit) for Windows. It also includes other packages apart from matplotlib if you may be needing them in the future. Try installing the proper … Read more
Use paths beginning with the string \\?\.
One possible cause for this error is that there might be spaces mixed with tabs for indentation. Try doing a search & replace to replace all tabs with a few spaces. Try this: import sys def Factorial(n): # return factorial result = 1 for i in range (1,n): result = result * i print “factorial … Read more
EDIT Sept 2021: phantomjs isn’t maintained any more, either EDIT 30/Dec/2017: This answer appears in top results of Google searches, so I decided to update it. The old answer is still at the end. dryscape isn’t maintained anymore and the library dryscape developers recommend is Python 2 only. I have found using Selenium’s python library … Read more
If you want to invert the case of that string, try this: >>> ‘AltERNating’.swapcase() ‘aLTernATING’
Try following code. to_cstring_array function in the following code is what you want. from libc.stdlib cimport malloc, free from libc.string cimport strcmp from cpython.string cimport PyString_AsString cdef char ** to_cstring_array(list_str): cdef char **ret = <char **>malloc(len(list_str) * sizeof(char *)) for i in xrange(len(list_str)): ret[i] = PyString_AsString(list_str[i]) return ret def foo(list_str1, list_str2): cdef unsigned int i, … Read more
Arguments of sort and sorted Both sort and sorted have three keyword arguments: cmp, key and reverse. L.sort(cmp=None, key=None, reverse=False) — stable sort *IN PLACE*; cmp(x, y) -> -1, 0, 1 sorted(iterable, cmp=None, key=None, reverse=False) –> new sorted list Using key and reverse is preferred, because they work much faster than an equivalent cmp. key … Read more