Php
Assign
A variable must be assigned before use.
"""A variable must be assign before use
"""
y = 0
y = y + 1
assert y == 1 # pass
try:
z = z + 1
except NameError:
print('Variable z not defined')
Reassignment
p120 In Python it is legal to reassign a variable.
"""In Python it is legal to reassign a variable
An assignment can make two variables equal, but not permanent
"""
x = 5
x = 7
assert x == 7 # pass
assert x != 5 # pass
a = 1
b = 1
assert a == b # pass
a = 2
assert a != b # pass
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Last update: 16 days ago
