python 查找文本中的关键字

1. 查找一行中是否有某个关键字：

lines = f.readlines()
for line in lines:
    if ("fix"in line ):
        AllFix.write(line + 'n')

2. 查找一行中是否有某个列表中的任何关键字：

kws = ["buffer overflow",
       "segfault",
       "core bugfix",
       "abort",
       "memory leak",
       "kernel"
       "resource leak"
       "thread"
       "race"]

lines = AllFix.readlines()
for line in lines:
    if (any (kw in line for kw in kws)):
        SeriousFix.write(line + 'n')

3. 查找一行中的单词是否是某个列表中的关键字：

cities = ['London', 'Manchester', 'Birmingham']
where = input("Where are you trying to find")
if where in cities:
    print("drive 5 miles")
else:
    print("I'm not to sure")