Jan 7, 2009 · That's why you'll see a def main(): block up top, which contains the main flow of the script's functionality. Why implement this? Remember what I said earlier about import statements? …

function(a, b) Note that file is one of Python's core modules, so I suggest you change the filename of file.py to something else. Note that if you're trying to import functions from a.py to a file called b.py, …

python myscript.py myfunction This works because you are passing the command line argument (a string of the function's name) into locals, a dictionary with a current local symbol table. The …

def foo(): if 1: print 1 Please note that before if, there is a tab, and before print there is 8 spaces. Output: File "<stdin>", line 3 print 1 ^ IndentationError: expected an indented block It's quite hard to …

def add(x,y): return x+ y # calling this will require only x and y add(2,3) # 5 If we want to add as many arguments as we may want, we shall just use *args which shall be a list of more arguments than the …

What does the @ symbol do in Python?What's the syntactic or practical benefit of having decorators here, instead of (for example) just calling something like app.route("/", hello) immediately after …

Jan 17, 2012 · I'm trying to create a simple Caesar Cipher function in Python that shifts letters based on input from the user and creates a final, new string at the end. The only problem is that the final cipher...

Jul 11, 2016 · How do I create or use a global variable inside a function? How do I use a global variable that was defined in one function inside other functions? Failing to use the global keyword where …

Feb 27, 2013 · 42 Just curious, Is there any difference (advantages and disadvantages) between using len() or def __len__() when I build a class? And which is the best Python style?

As the Style Guide for Python Code admits, The naming conventions of Python's library are a bit of a mess, so we'll never get this completely consistent Note that this refers just to Python's standard …