Control flow syntax makes use of colons and indentation or else know as white space.
- if some condition ,then execute some code.
- elif some other condition, then execute some other code.
- else if none of the above conditions are true , then execute some other code
by default = if x: #it equates it to true
LOOPS
The variable name defining the iterable can be anything .
FOR LOOP
mylist=[1,2,3,4,5,6,7]
for num in mylist:
if num%2==0:
print(num)
else
print(f'Odd Number: {num}')
for_ in 'Hello:
print('cool!')
will print cool 5 times
tuple and packing
mylist=[(1,2),(3,4)]
1. for item in mylist:
print(item)
2.for a,b in mylist:
print(a)
print(b)
For dictionary
d={'k1':1,'k2':2}
1.for value in d.items():
print(value)#by default we iterate through keys.
WHILE LOOP
it keeps on iterating , until the condition is verified.
x=0
while x<5:
print(f'value of x is{x}')
x+=1
Three important statements
- break : breaks out of the loop
- continue :goes to the top of the loop
- pass:does nothing at all .It may act as a place holder to avoid syntax error due to indentation .
x=[1,2,3]
for item in x:
pass#if pass is not used it causes an EOF error
Programmer Prodigy 