In [1]:

from functools import partial

partials = []
lambdas = []

for i in range(3):
    # partial: i evaluated right now
    partials.append(partial(print, "partial", i))
    # lambda: i evaluated when it's called later!
    lambdas.append(lambda: print("lambda", i))

In [2]:

for p in partials:
    p()

for lam in lambdas:
    lam()

partial 0
partial 1
partial 2
lambda 2
lambda 2
lambda 2

In [3]:

i = 5
lambdas[0]()

lambda 5