1. Basic IF Statement :
if condition:
Block
statements
Example:
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| if True:
print "its True Block"
if 10:
print "its True Block"
if 1<2:
print "Yes its True 1 is lesser then 2"
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2. IF.. Else... Statement
if condition:
True Block
else:
False Block
Example:
a=1
b=2
if a<b:
print "its b is big"
else:
print "its a is big"
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| if True:
print "its True Block"
if not 23:
print "Yes i am not 23"
else:
print "Yes i am 23"
if None:
print "Not none"
else:
print "I am NOne"
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3. IF.. Elif...elif... Statement
if condition1:
Cond1 Block
elif Condition2:
Cond2 Block
elif Condition3:
Cond3 Block
.
.
4. IF.. Elif...elif...else... Statement
if condition1:
Cond1 Block
elif Condition2:
Cond2 Block
elif Condition3:
Cond3 Block
.
.
else:
Else Block
Example:
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| a=int(raw_input("Enter a value"))
b=int(raw_input("Enter b value"))
c=int(raw_input("Enter c value"))
if a<b and b<c:
print "C is big"
elif a>b and a>c:
print "A is big"
else:
print "B is big"
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5. Nested IF.. Elese Statement
if Condition1:
if Condition2:
Condition2 True Block
else:
Condition2 False Block
else:
if Condition3:
Condition3 True Block
else:
Condition3 False Block
Example:
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| if a<b:
if b<c:
print "C is big"
else:
print "B is big"
else:
if a>c:
print "A is Big"
else:
print "C is big"
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