Why is the output 0 1 2 and not 0 1 2 0 1 2?

Question

x=(for i in range(3))
for i in x:
print (i)
for i in x:
print (i)

Why is the output of the code 0 1 2 instead of 0 1 2 0 1 2. And if x is a list why is the output 0 1 2 0 1 2.

Answer 1

typo you meant to write
x=(i for i in range(3))

The reason is that the () makes it a generator and not a list.
You exhausted the generator with your first
for i in x:
to get a list write
x = [ i for i in range(3)]
[] createss a list
() creates a generator
See https://stackoverflow.com/questions/47789/generator-expressions-vs-list-comprehension