第十章 Introducing Python Statements

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本文深入探讨了Python编程中的语法规则、特殊用例及实际应用案例，涵盖了多行语句、条件判断、循环控制、异常处理和交互式输入等核心概念。

1.Python’s Statements

Statement rule special cases

a = 1; b = 2; print(a + b) # Three statements on one line       chain together only simple statements


mylist = [1111,      #cross multiple lines
2222,
3333]

if (A == 1 and
B == 2 and
C == 3):
print('spam' * 3)

Block rule special case

if x > y: print(x)  #single-line if statements, single-line while and for loops

while True:
    reply = input('Enter text:')
    if reply == 'stop': break
    try:
        num = int(reply)
    except:
        print('Bad!' * 8)
    else:                          #else part to be run if no exception is raised in the try part
        print(num ** 2)
print('Bye')