I have a for loop with a 100 iterations and I would like to change the value of a variable for every 10 iterations. One way of doing this would be:
for i in range(100):
if i < 10:
var = 1
elif i < 20 :
var = 1.5
...
But I don't want to have 10 if statements. Is there a better way of doing it? In this case, the variable changes by the same amount for every 10 iterations.
You're looking for the modulo (%) operator. From the docs:
The % (modulo) operator yields the remainder from the division of the first argument by the second.
Indeed, 11 = 10 * 1 + 1 hence 11 % 10 = 1, but 30 = 10*3 + 0 hence 30 % 10 = 0! And you're looking for all those that are a factor of ten:
increment = 0.5
for i in range(100):
if i % 10 == 0:
var += increment
i to (i+1) since I don't want to increase the variable in the beginning, when i = 0. Or I could have decreased the value of var by increment in the beginning. But aside from that it works, thank you
if, for instance if i or if i > 0 could play the trick to avoid the first increase.There is this modulo operator %
for i in range(100):
if 0 == i % 10:
var = var + 0.5
or if you want to change var on other than the first iteration:
for i in range(100):
if i and 0 == i % 10:
var = var + 0.5
