Note: Avoid using python setup.py install use pip install . You need to remove all files manually, and also undo any other stuff that installation did manually. If you don’t know the list of all files, you can reinstall it with the –record option, and take a look at the list this produces. To record a list of installed files, … Read more
The DictWriter doesn’t work the way you expect. To read it back: which is quite compact, but it assumes you don’t need to do any type conversion when reading
The problem is that .replace(old, new) returns a copy of the string in which the occurrences of old have been replaced with new. Instead, you can swap the character at index i using:
It is simple and straightforward 🙂 Just check the official documentation. I would make there a little change so you could control the spider to run only when you do python myscript.py and not every time you just import from it. Just add an if __name__ == “__main__”: Now save the file as myscript.py and run ‘python myscript.py`. Enjoy!
The “official” answer, according to the Scipy documentation, is that there is really no reason to ever since all of the interesting functions in Scipy are actually located in the submodules, which are not automatically imported. Therefore, the recommended method is to use then, functions can be called with Personally, I always use and live with … Read more
The connection was refused by the server. This can be caused by several reasons not related to Python programming: a firewall the SSH service is configure not to take requests from your IP bad host ip … (many more) Check if you can use the normal SSH client to connect with this host/user/password combination.
Python lacks the tail recursion optimizations common in functional languages like lisp. In Python, recursion is limited to 999 calls (see sys.getrecursionlimit). If 999 depth is more than you are expecting, check if the implementation lacks a condition that stops recursion, or if this test may be wrong for some cases. I dare to say that … Read more
Well you can simply use: Or in case the 1 needs to be fetched: Finally say you want to update a sequence of keys with new values, like: you could use:
If a function does not return anything, e.g.: it has an implicit return value of None. Thus, as your pick* methods do not return anything, e.g.: the lines that call them, e.g.: set word to None, so wordInput in getInput is None. This means that: is the equivalent of: and None is an instance of NoneType which does not provide iterator/iteration functionality, so you get that type error. The fix … Read more
I’d say If you are using python 2.x instead of 3.x, you can be more memory-efficient by using xrange(), changing the above code to: