Why there is no "do while" loop in python?

Answer 1

Because the designer didn't implement it.

I guess it's for the sake of simplicity; for example increment operators are also not available.

Instead of something like:

do
cin >> inp;
while(cin!=whatever);

... you would write:

while True:
int = input()
if condition:
break

Answer 2

x=0
while x<100:
print(f'To infinity & beyond. {x}')
x+=1

This is another example of how to break a whole loop in python. It is essentially the same example HonFu gave