Python初识逻辑与if语句及用法大全

if bool_result: # 语法块
	do # 业务代码块注意缩进

>>> insane_status = 'hunger
>>> if insane_status == 'hunger':
		print( 'xiaomu invites Insane to dinner' )
		
xiaomu invites Insane to dinner

# coding:utf-8
info = 'my name is insane'
info_list = info.split()
print(info_list)
if info_list[0] == 'insane':
 print(1)
 info_list[0] = 'loafer'
if info_list[1] == 'insane':
 print(2)
 info_list[1] = 'loafer'
if info_list[2] == 'insane':
 print(3)
 info_list[2] = 'loafer'
if info_list[-1] == 'insane':
 print(4)
 info_list[-1] = 'loafer'
print(info_list)
info = ' '.join(info_list)
print(info)
info = 'my name is insane, i am a pythoner, i love python'
info_list = info.split()
if info_list[0] in ['python', 'i']:
 info_list[0] = '*'
if info_list[1] == 'python' or info_list[1] == 'i':
 info_list[1] = '*'
if info_list[2] == 'python' or info_list[2] == 'i':
 info_list[2] = '*'
if info_list[3] == 'python' or info_list[3] == 'i':
 info_list[3] = '*'
if info_list[4] == 'python' or info_list[4] == 'i':
 info_list[4] = '*'
if info_list[5] == 'python' or info_list[5] == 'i':
 info_list[5] = '*'
if info_list[6] == 'python' or info_list[6] == 'i':
 info_list[6] = '*'
if info_list[7] == 'python' or info_list[7] == 'i':
 info_list[7] = '*'
if info_list[8] == 'python' or info_list[8] == 'i':
 info_list[8] = '*'
if info_list[9] == 'python' or info_list[9] == 'i':
 info_list[9] = '*'
if info_list[-1] in ['python', 'i']:
 info_list[-1] = '*'
print(info_list)
info = ' '.join(info_list)
print(info)
info = 'my name is insane'
print(len(info))
if len(info) > 10 and len(info) != 15:
 print(info.replace('insane', 'loafer'))
if len(info) > 10 and len(info) != 17:
 print(info.replace('name', 'iop'))
print('finish')

['my', 'name', 'is', 'insane']
4
['my', 'name', 'is', 'loafer']
my name is loafer
['my', 'name', 'is', 'insane,', '*', 'am', 'a', 'pythoner,', '*', 'love', '*']
my name is insane, * am a pythoner, * love *
17
my name is loafer
finish
Process finished with exit code 0