Python:Functions

sys._getframe( ).f_code.co_name

Return name of current function

You can pass a function-name as parameter

def main():
    outcome = function1(function2,inpar2 = <value>)
    return

def function1 (functiontocall, inpar2 = <defaultvalue>):
    result = functiontocall(inpar2)
    return result

def function2 (inpar):
    codeblock
    return result

main()

eval(functionnameasstring)()

Convert a function name as string to a function call

WARNING: Make sure you have control over the string provided, you may call anything this way.

Build in function

List of all build in functions [1]

len(obj1)

Return the number of elements in obj1 (string, list, tuple, set)

max(obj1)

Return the largest item in obj1

min(obj1)

Return the smallest item in obj1

round(x,y)

Round x to y decimals

input([prompt])

Read and return input from standard input. Display 'prompt' first when provided.

int(string[,base=x)])

Convert str to an integer. Base = 2 converts bit-string presentation ('010101').

str(object)

repr(object)

Return a string representation of an object. str for the informal representation (just make it printable), repr for the formal representation (more formating??)

Other often used functions

Sleep function

import time
time.sleep(<sec>)

Self defined functions

Arguments are positional but can be passed by keyword too.

def main():
    outcome = function(par1,par2)
    function(par2 = <value>, par1 = <value>)
    return

def function (inpar1, inpar2 = <defaultvalue>):
    codeblock
    return result

main()

def function (*args,**kwargs)

Take any number of positional arguments and put them in the tuple args

Take any number of keyword arguments and put them in the dict kwargs