时间戳

首页 > 解决方案 > 如何在一行python3中组合多个if语句

python-3.x - 如何在一行python3中组合多个if语句

问题描述

嗨，我是 python 和编程的新手，我将如何结合这些：

if "Web" in source:
    source = "WEB"
if ((source == "Blu-ray") and (other == "Remux") and (reso == "1080p")):
    reso = "BD Remux"
if "DVD" in name:
    reso = "DVD Remux"
if ((source == "Ultra HD Blu-ray") and (other == "Remux") and (reso == "2160p")):
    reso = "UHD Remux"
if source == "Ultra HD Blu-ray":
    source = "Blu-ray"

标签： python-3.xif-statement

解决方案

您可以使用该elif子句if通过额外条件扩展您的语句：

mystring='what will it print?' 

if   mystring == 'hello':
     print('world!')
elif mystring == 'good':
     print('bye!')
elif mystring == 'how':
     print('are you?')
else:
     print('I ran out of ideas!')

 [out]: I ran out of ideas!

稍微重写您的示例可能如下所示：

source='Ultra HD Blu-ray'
name='DVD'
reso='2160p'
other='Remux'

resos={'1080p':'BD Remux','2160p':'UHD Remux'}

if "Web" in source:
    source = "WEB"
elif "Blu-ray" in source and other == "Remux":
    source = "Blu-ray"
    reso   = resos.get(reso,'UNDEFINED')
elif "DVD" in name:
    reso = "DVD Remux"

print(source, name, reso)

[out]: Blu-ray DVD UHD Remux

请注意，我已将resos字典用作两个if语句的替代品，有关此内容的更多详细信息请参见此处。

推荐阅读