Python control statements

1 For example, Python advocates simple and practical thinking, it does not have a switch statement, if you want to implement the switch statement effect
There are 2 ways to write a
(1) through the IF Elif statement to achieve
If condition:
...
Elif Conditions:
...
Else
...
(2) by
Copy the Code code as follows:

info = {}
info = {' A ': ' 1′, ' b:2, ' c:3, ' default ': SS '}
c = Info.get (' A ', default ')
The 2while statement has an else statement
A = 2
While a > 1:
print ' Success '
Else
print ' ERROR '

When the while loop condition becomes false, the else block is executed-even when the condition is first tested.
3 For statement has else statement
Copy the Code code as follows:

For I in Xrange (5):
Print I
Else
print ' Loop is end '

Results are 0 1 2 3 4 loop is end
Remember that the Else section is optional. If it is included, it is always executed once at the end of the For Loop,
If you encounter a break statement, the else statement after the for is not executed
Copy the Code code as follows:

For I in Xrange (5):
if i = = 3:
print ' Success '
Else
print ' Loop is end '

The result is success.

This article from: Rootexp

