Python loop
This chapter will introduce Python's loop, the program is generally executed sequentially.
Programming languages provide various control structures, allows more complex execution paths.
Loop allows us to perform a statement or group of statements repeatedly, the following is the general form in most programming languages of the loop:
Python provides for loop and while loop (no do..while loop in Python):
| Type of cycle | description |
|---|---|
| while loop | Loop body is executed at the time of the judgment given condition is true, otherwise exit the loop. |
| for loop | Repeat statement |
| Nested loop | You can be nested for loop in while loop body |
Loop control statements
Loop control statements can change the order of statement execution. Python loop control supports the following statements:
| Control statements | description |
|---|---|
| break statement | It terminates the loop during the execution of the statement block and out of the entire cycle |
| continue Statement | Termination statement block in the implementation process of the current cycle, jump out of the cycle, the next time through the loop. |
| pass sentence | pass is an empty statement, in order to maintain the integrity of the program structure. |