python basis - if else conditional statement

Python by a conditional statement or statements of the execution result (True or False) to determine the execution code block.

Keyword: if ... elif ... else ...

if can stand alone, elif and else an error will not be alone:

• if...
• if...elif...
• if...else...
• if ... elif ... elif ... else

note:

1, each of the conditions to be used later in the colon: indicates the following condition is satisfied after the statement block to be executed.
2, using indentation divided statement blocks, the number of statements in the same indentation together to form a block.
3, there is no switch in Python - case statement.

 

# Exercise: Write a program to determine the type of result

Score = int >>> (the INPUT ( " Please enter your score: " )) 
Please enter your score: 62 
>>> IF Score> 90 : 
...      Print ( " Excellent " ) 
... elif 60 <= Score <= 90 : 
...      Print ( " good " ) 
... the else : 
...      Print ( " poor " ) 
... 
good

 

if nested

In the nested if statements, can if ... elif ... else in another configuration if ... elif ... else structure

Example:

int = NUM (INPUT ( " Enter a number: " ))
 IF NUM% 2 == 0:
     IF NUM%. 3 == 0:
         Print ( " the number you entered is divisible by 2 and. 3 " )
     the else :
         Print ( " you the number can be divisible by 2, but not divisible by 3 " )
 the else :
     IF NUM% 3 == 0:
         Print ( " the number you enter is divisible by 3, but not divisible by 2 " )
     the else :
         Print   ( " the number you entered can not be divisible by 2 and 3 " )