Python ----- & gt; process control, python ----- Process

Python -----> process control, python ----- Process

1:
If 1 <2: ("the condition is True, and the result is True ")
Print ('true ')
Else:
Print ('forse ')

2:
I = 0 (assign 0 to I)
While I <5: ("True if I is less than 5 ")
Print (I)
I + = 1; ("I add 1 each time. If I do not write, it will jump into an endless loop ")

3: for I in range (1, 10 ):
For j in range (1, I + j ):
Print ('{}* {}={}\ t'. format (j, I, j * I), end = '')
Print () ("line feed ")

If condition judgment statement:

1: if is followed by a condition (Note: This is different from java, and the condition does not need to be added ())

If the condition is True, a (True) is returned and the following statement is executed.

If the condition is not true, execute the statements in else. (Note: Code indentation)

Loop statement:

2: while

 

The judgment condition can be any expression, and any non-zero or non-null value is True. The judgment condition Forse

3:

Output a 9-9 multiplication table using a for Loop

1--3 (top instance)

4: variable exchange

A = 8

B = 1

A, B = B, a ("output result: B = 8, a = 1 ")

5: Random Number

Import random ("import random ")
Print (random. randint () ("random number range 0-9 ")