Conditionals
ConditionalsΒΆ
Conditionals are used to choose between different statements. The if statement is what Python provides for choosing between different statements. The Python documentation has more information in if.
Here are some examples.
# We want to simulate flipping a coin.
# We start by importing random:
import random
if random.randrange(0,2) == 0: print('HEADS')
else : print('TAILS')
TAILS
# We assign to val before testing because every time we use the
# expression random.random() we get a new value!
val = random.random()
# 4 tenths of the times heads, 4 tenths of the times tails
# 2 tenths of the times standing
if val < 0.4 : print('HEADS')
elif val < 0.8 : print('TAILS')
else : print('STANDING')
TAILS