I'm trying to learn more about the map() function and if I can use it to speed up iteration over massive lists in my other programs. Right now im trying to understand the output of the following code:
x = []
for y in range(1000):
x.append(0)
print(x[0])
def func(y):
global x
x[y] += 1
for y in range(100):
func(y)
print(x[0])
map(func, range(100))
print(x[0])
output:
0
1
1
Why is the output not
0
1
2
and what modifications would I need to make to the above code to achieve this output?
My interest is largely academic. Any information or direction to a good source is appreciated.
