How to Determine Whether a Given Integer is Between two Other Integers in Python

Using Comparisons

Unlike C, all comparison operations in Python have the same priority, which is lower than that of any arithmetic, shifting or bitwise operation. Also unlike C, expressions like a < b < c have the interpretation that is conventional in mathematics:

See the following example:

#!/usr/bin/python3

i = 20
if 10 < i < 40:
  print(True)

True

Using range

For example,

#!/usr/bin/python3

i = 10
r = range(10, 30)

if i in range(10, 30):
  print(True)

print(30 in r)
print(20 in r)

True
False
True