The if statement
The general form of Python if statement is as follows:
if condition_1:
statement_block_1
elif condition_2:
statement_block_2
else:
statement_block_3
If "condition_1" to True will perform "statement_block_1" block statement
if "condition_1" to False, the determination "condition_2"
If "condition_2" to True will perform "statement_block_2" block statement
if "condition_2" False, the execution "statement_block_3" block statement
(0 to False, nonzero is True, negative number is non-zero is True)
Instead of using Python elif else if, so if statement keyword is: if - elif - else.
Note:
1, each of the conditions to be used later 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.
| Operators | description |
|---|---|
| < | Less than |
| <= | less than or equal to |
| > | more than the |
| >= | greater than or equal to |
| == | Equal, compare two values are equal |
| != | not equal to |
