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Example
a = 2
b = 8
if (a < b):
print("a < b")
>>> a < b
|
We must define scope before the print
. In fact python relies on indentation (whitespace at the beginning of a line) to define scope in the code. |
Elif
if (a > b):
print("a > b")
elif (a < b):
print("a < b")
>>> a < b
|
The elif
keyword is used to say if the previous conditions were not true, then try this condition. |
Else
if (a > b):
print("a > b")
elif (a < b):
print("a < b")
else:
print("a is equal to b")
|
The else keyword catches anything which isn't caught by the preceding conditions. |
Short Hand If
if a < b: print("a < b")
|
Short Hand If ... Else
Two conditions: |
print("a > b") if a > b else print("a < b")
|
Three conditions: |
print("a > b") if a > b else print("a is equal to b") if a == b else print("a < b")
>>> a < b
|
AND
if (condition_1 and condition_2):
print("Both conditions are correct")
else:
print("At least one of the conditions is incorrect")
|
OR
if (condition_1 or condition_2):
print("At least one of the conditions is correct")
else:
print("Both conditions are incorrect")
|
|
|
Nested If
if (a > 0):
if (a > b):
print("a > 0 and a > b")
elif (a < b):
print("a > 0 and a < b")
else:
print("a < 0")
>>> a > 0 and a < b
|
The pass Statement
|
if
statements cannot be empty, but if we for some reason have an if statement with no content, we can put in the pass
statement to avoid getting an error. |
|
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Comments
Great one. Carry on!
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