Python ''control flow'', python Control Flow

Python ''control flow'', python Control Flow
I. if statement

Format:

i1 = 3if i1 > 4:    print('yes you are right')elif 0 < i1 < 4:    print('im dont konw')else:    print('no you are wrong')

Note the (:) symbol after if, elif, and else. We use it to tell Python to follow a statement block.

Ii. while statement

Number = 23 running = Truewhile running: guess = int (input ('enter an integer: ') if guess = number: print ('Congratulations, you guessed it ') running = False elif guess <number: print ('No, it is a little lower than that ') else: print ('No, it is a little higher than that') else: print ('the while loop is over') print ('done ')

Output result:

Enter an integer: 22
No, it is a little lower than that
Enter an integer: 24
No, it is a little higher than that
Enter an integer: 23
Congratulations, you guessed it
The while loop is over
Done

Note: In Python2.x, raw_input is used, and in Python3.x, input is used. And it must be followed by a colon.

3. for Loop

Format: for... in

For I in range (): print (I) else: print ('the loop is over') Result: C: \ Python36 \ python.exe C: /Users/CAI Rui/7. py1234the loop is overProcess finished with exit code 0

Note: range (1, 5) Only outputs 1-4 but not 5. Also, the else part is optional. If else is included, it is always executed once after the for loop ends, unless a break statement is encountered.

The for loop is recursive within this range, which is equivalent to assigning each number (or object) in the sequence to I, one at a time, and then executing the program block with each I value.

 

Programming is fun

When the work is done

If you wanna make your work also fun:

Use Python