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Conditional statements in python are of 3 types. • If statement ... condition is true then only the statement given in if block will be executed.
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computations or actions depending on whether the given condition evaluates to true or false. Conditional statements in python are of 3 types
If statement
If else statement
If elif statement
Nested if else
1. If Statement : if Statement is used to run a statement conditionally i.e. if given condition is true then only the statement given in if block will be executed.
if
For example consider the code given below if (percentage > 33): print (“Pass”)
Explaination : In the above code if value of percentage is above 33 then only the message “Pass” will be printed.
2. If else Statement In the case of if else statement If given condition is true then the statement given in if block will be executed otherwise(else) the statements written in else block will be executed
if
3. If elif Statement if elif is used for execution OF STATEMENTS based on several alternatives. Here we use one or more elif (short form of else if ) clauses. Python evaluates each condition in turn and executes the statements corresponding to the first if that is true. If none of the expressions are true, and an else clause will be executed
Explaination : In the above code if value of percentage is above 33 then only the message “Pass” will be printed otherwise it will print “Fail”
Example:
If (percentage >90):
Print(“Outstanding”)
elif (percentage >80):
print (“Excellent”)
elif (percentage >70):
print (“VeryGood”)
elif (percentage >60):
print (“Good”)
elif (percentage >33):
print (“Pass”)
else
print(“Fail”)
Explaination : In the above code
if value of percentage is above 90 then it will print “Outstanding”
if value of percentage is above 80 then it will print “Excellent”
if value of percentage is above 70 then it will print “Very Good”
if value of percentage is above 60 then it will print “Good”
if value of percentage is above 80 then it will print “Pass”
if no condition is true then it will print “Fail” In above code only 1 condition can be true at a time if no condition is true then else statement will be
executed