What does -> mean in Python function definitions? - Stack Overflow
Jan 17, 2013 · funcdef: 'def' NAME parameters ['->' test] ':' suite The optional 'arrow' block was absent in Python 2 and I couldn't find any information regarding its meaning in Python 3. It …
What is a DEF function for Python - Stack Overflow
Sep 10, 2013 · I am new to coding Python and I just can't seem to understand what a Def function is! I have looked and read many tutorials on it and I still don't quite understand. Can somebody …
How can I return two values from a function in Python?
def newFn(): #your function result = [] #defining blank list which is to be return r1 = 'return1' #first value r2 = 'return2' #second value result.append(r1) #adding first value in list result.append(r2) …
How can I use a global variable in a function? - Stack Overflow
Jul 11, 2016 · You may want to explore the notion of namespaces.In Python, the module is the natural place for global data:. Each module has its own private symbol table, which is used as …
python - Differences between `class` and `def` - Stack Overflow
To access a 'def' from within a class, you need to first make an object of that class, and than do object.nameofdef(), which than executes that 'def' on the object, while if you just make a 'def' …
What does if __name__ == "__main__": do? - Stack Overflow
Jan 7, 2009 · It executes the def block, creating a function object, then assigning that function object to a variable called function_a. It prints the string "before function_b". It executes the …
Using len () and def __len__ (self): to build a class
Feb 27, 2013 · There is a huge difference.. The __len__() method is a hook method. The len() function will use the __len__ method if present to query your object for it's length.
correct way to define class variables in Python - Stack Overflow
Neither way is necessarily correct or incorrect, they are just two different kinds of class elements: Elements outside the __init__ method are static elements; they belong to the class.
python - How to make a class JSON serializable - Stack Overflow
Sep 22, 2010 · For more complex classes you could consider the tool jsonpickle:. jsonpickle is a Python library for serialization and deserialization of complex Python objects to and from JSON.
How do I define a function with optional arguments?
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 …