def func(arg):
C.sm(arg)
C().m(arg)
f(arg)
module.C.sm(arg)
module.C().m(arg)
module.f(arg)
MODULE
ITERTOOLS
CSV
DECORATORS
NAMETUPLES
JSON
Flask
##################### CONCEPTS ######################
CLOSURES : Remembering a Function
DRY : Not To Repeate Yourself
MEMOIZATION : cashing to save computing time
COMPINATIONS : Order does not Matter
PERMUTATIONS : Order Matter
IDEMPOTENCE : When f(x) = f(f(x)) example: GET, PUT, DELETE
STRING CONCATENATION : 'Name is ' + name
STRING INTERPOLATION : f'Name is {name}'
MUTABLE : lists
IMMUTABLE : strings
1st ClASS FUNCTION
##################### CLASSES ######################
def __repr__(self,str1): # __add__ , __len__ ,__str__
return f'Arg : {self.arg}{str1}'
# repr --> unambigous | str --> readable
__repr__ = function
@property
def fullname(self):
return f'{self.first} {self.last}'
#!/usr/bin/python3.6
#https://stackoverflow.com/questions/4385839/reimporting-a-single-function-in-python
import os
from module import f
f()
# changing f
command = "sed -i 's/hello/goodbye/' module.py" # https://stackoverflow.com/a/53124215/1273751
os.system(command)
# reloading
import sys
import importlib
importlib.reload(sys.modules['module'])
from module import f
# calling the altered f
f()
# changing back to the original
command = "sed -i 's/goodbye/hello/' module.py"
os.system(command)
## if function is not from a module, do the following:
def g(x):
return x + 1
# 1. Import all the code from the file 'module.py' import module module.f() # 2. Rename module in your own file import module as m m.f() # 3. Import only specific functions of the module from module import f f()
def test_if_f_is_invalid():
assert f() == False
def test_if_f_is_valid():
assert f() == True