range():
for num in range(starting_value,ending_value,increment)
ending value is not considered inside the num
range generates the number instead of storing it in a list..
Enumerate
What it does is it returns an index counter with the data value in a loop .
for eg
word='abcde'
for index,letter in enumerate(word):
print(index)
print(letter)
zip (): just like a zipper it will zip both of the list and pair up the items
mylist1=[1,2,3]
mylist2=['a','b','c']
for item in zip(mylist1,mylist2):
print(item)
#it will only be able to zip pair till the shortest list , afterwards it will ignore it .
In operator : to quickly check if the element is present or not.Works in dictionary
min and max functions:
random library
Importing from a library
- shuffle (list , tuple ,etc ): it does not return any thing
- randint(lowerrange,upperrange) : returns a random interger.
input function always takes a string as a input , so we need typecasting
List comprehension
quickly creating a list , for example if you keep on appending you list..
mystring='hello'
mylist=[]
for letter in mystring:
mylist.append(letter)
print(mylist)
OR
mylist=[letter for letter in mystring]
You can also perform certain operations
mylist=[x fo x in range(0,11) if x%2==0]
How to use if and else statement
results=[x if x%2==0 else ‘ODD’ for x in range(0,11)]
Nested loop:
mylist=[x*y for x in [2,4,6] for y in[10,100,1000]
Programmer Prodigy 