change_if_new_technique.py

# Stupid simple idea but very useful
# if some condition is met, then we return new value, or charged old value
# Else, we return the (unchanged) original value


def change_if_new(new_thing, old_thing):
    if new_thing:
        return new_thing
    # else
    return old_thing


name = "Gero"

print(name)  # Gero

name = change_if_new(new_thing="Enrique", old_thing=name)

print(name)  # Enrique


name = change_if_new(new_thing=None, old_thing=name)  # No change
name = change_if_new(new_thing=0, old_thing=name)  # No change
name = change_if_new(new_thing=False, old_thing=name)  # No change

print(name)  # Enrique