Use of the IF statement in the Python introductory tutorial

Source: Internet
Author: User

This article mainly introduces the use of the IF statement of the Python introductory tutorial, which is the basics of getting started in Python, and needs friends to refer to the following

The IF statement in Python is similar to other languages. An If statement contains a logical expression that uses the data to compare and makes a decision based on the result of the comparison.

Grammar:

The syntax for the IF statement in the Python programming language is:

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1 2 If Expression:statement (s)

If the Boolean expression evaluates to True, then the IF statement block is executed. If the If statement Boolean expression evaluates to False, the first set of code is executed.

The Python programming language assumes that any non-zero and non-null is true and, if zero or null, the value is assumed to be false.

Example:

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1 2 3 4 5 6 7 8 9 10 11-12 #!/usr/bin/python var1 = + if Var1:print "1-got a true expression value" Print var1 var2 = 0 if Var2:print "2- Got a true expression value "Print var2 print" Good bye!

When the above code is executed, the following results are produced:

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1 2 3 1-got a true expression value good bye!
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