[Tutor] Python Generator expressions

[Animesh Bhadra]

Hi All,

Need one help in understanding generator expression/comprehensions.

This is my sample code.

# This code creates a generator and not a tuple comprehensions.
my_square =(num *num fornum inrange(11))
print(my_square) # <generator object <genexpr> at 0x7f3c838c0ca8>
# We can iterate over the square generator like this.
try:
whileTrue:
print(next(my_square)) # Prints the value 0,1,4....
exceptStopIterationasSI:
print("Stop Iteration")
# Another iteration
forx inmy_square:
print(x) # This prints nothing.


Does the generator exhausts its values when we run the iterator once?
Lastly any specific reason for not having a tuple comprehensions?

Have checked this link, but could not understood the reason?

  * https://stackoverflow.com/questions/16940293/why-is-there-no-tuple-comprehension-in-python

Regards,
Animesh