Python-based if statement

Python's if Statement general format

if <test1>:    <do something>elif:    <do something>else:    <do something>

• The condition of the IF statement can be expressed by > (greater than), < (less than), = = (equals), >= (greater than or equal), <= (less than or equal) to indicate its relationship

Some examples

Example 1:

# -*- coding: UTF-8 -*-flag = Falsename = ‘luren‘if name == ‘python‘:            flag = True              print ‘welcome boss‘    else:    print name 输出结果为：>>> luren

Example 2:

# -*- coding: UTF-8 -*-num = 5     if num == 3:                print ‘boss‘        elif num == 2:    print ‘user‘elif num == 1:    print ‘worker‘elif num < 0:               print ‘error‘else:    print ‘roadman‘输出结果为：>>> roadman

Example 3:

# -*- coding: UTF-8 -*-num = 9if num >= 0 and num <= 10:        print ‘hello‘else:    print ‘undefine‘输出结果为：>>> hello

If-else Multi-wording

Cases:

a, b = 1, 21.常规if a>b:    c = aelse:    c = bprint c2.表达式c = a if a>b else bprint c3. 二维列表c = [b,a][a>b]print c

Python-based if statement