Using keyword "and" and "or". Not working the same way as in many other languages.

and_or.py

a = 0
b = 1
# If a is "falsy" a is returned, b/a is not evaluated (i.e. no division by zero error). Otherwise b/a is returned.
print(a and b/a)

s = ""
# Returning "" if the string is "". In any other case it returns the first character in the string.
# Avoiding trying to indexing s when s does not have any characters or of None type.
print(s and s[0])

# Adding a "or" to make so it always returns empty string "" even if s = None.
s = None
print((s and s[0]) or '')

# And = If x is Falsy, return X, in any other case evaluate and return y
# Or = If x is Truthy, return X, in any other case evaluate and return y

# x if x == Falsy else y (AND)
# x if x == Truthy else y (OR)