Question

I am trying to make a for loop which adds new entries to my dictionary which should be in the format of {1:0.5, 2:0.5, 3:0.5….}

I need to make it do this 200 times. But for some reason my code prints out an empty dictionary:

initial_dict = {}

for i in initial_dict.copy():
    if len(i) < 200:
        initial_dict.update({i: 0.5})


print initial_dict

Any ideas?

Answer 1

>>> d = {}
>>> for i in range(1, 201):
...     d[i] = 0.5
... 
>>> d

or the shorter form using dict comprehensions:

>>> { i: 0.5 for i in range(1, 201) }