Appendix to previous article: Python examples of truthy/falsy

G'day:
All code and no narrative, this one. Here's the Python 3 equivalent of the Groovy code from the previous article (CFML (or probably LuceeLang) and what constitutes "The Truth").

print("none")
if None:
    print("truthy")
else:
    print("falsy")
print("=====================")


print("empty string")
if "":
    print("truthy")
else:
    print("falsy")
print("=====================")

print("non-empty string")
if "0":
    print("truthy")
else:
    print("falsy")
print("=====================")

print("zero")
if 0:
    print("truthy")
else:
    print("falsy")
print("=====================")

print("non-zero")
if -1:
    print("truthy")
else:
    print("falsy")
print("=====================")

print("empty list")
if []:
    print("truthy")
else:
    print("falsy")
print("=====================")


print("non-empty list")
if [None]:
    print("truthy")
else:
    print("falsy")
print("=====================")


print("empty dictionary")
if {}:
    print("truthy")
else:
    print("falsy")
print("=====================")

print("non-empty dictionary")
if {"key":None}:
    print("truthy")
else:
    print("falsy")
print("=====================")

class Test:
    def __init__(self, value):
        self.value = value

    def __bool__(self):
        return self.value == "truthy"

print("truthy object")
test = Test("truthy")
if test:
    print("truthy")
else:
    print("falsy")
print("=====================")

print("non-truthy object")
if Test("anything else"):
    print("truthy")
else:
    print("falsy")
print("=====================")

Output:

>python truthy.py
none
falsy
=====================
empty string
falsy
=====================
non-empty string
truthy
=====================
zero
falsy
=====================
non-zero
truthy
=====================
empty list
falsy
=====================
non-empty list
truthy
=====================
empty dictionary
falsy
=====================
non-empty dictionary
truthy
=====================
truthy object
truthy
=====================
non-truthy object
falsy
=====================

>

The most interesting thing in this is __init__ and __bool__? FFS. I've found a language even worse than PHP for its shit function names and underscore usage, it seems.

More Guinness, pls...

--
Adam