Python Process Control (conditional statements)

1,python Process Control single condition basic statement

2,python process Flow Multi-condition control statement

1,python Process Control single condition basic statement

If judgment condition:    Execute statement ... else:    EXECUTE statement ....

Judge the condition to be true, that is, execute the statement, otherwise execute the statement in the else. The variable is not NULL or not 0 or none is true.

　

Example:

#！ /usr/bin/env python#-*-coding:utf-8-*-n = input (' Please input number: ') if n > 0:    print ' n is positive ' else:    print ' n is negative '

　　

2,python process Flow Multi-condition control statement

If judgment condition 1:    EXECUTE statement 1......elif judgment Condition 2:    EXECUTE statement 2......elif judgment Condition 3: Execute statement    3......else:    EXECUTE statement 4 ...

　　

Example:

#!/usr/bin/env pythonscore = Int (raw_input (' Please INPU score: ')) if score >=:    print ' A ' elif score >=:    print ' B ' elif score >=60:    print ' C ' elif score <60:    print ' D '

　　

Python Process Control (conditional statements)