Question

是否可以通过文件的一部分在文件中找到行

例如：

I'm the good boy
I'm the bad boy
I'm the really good boy

我可以通过搜索 I'm the boy 而不写 good 或 bad 来找到该行吗

我需要抓住三行

我试过了

str = "iam good boy"
if "iam boy" in str:
    print ("yes")
else:
    print ("no")

Answer 1

使用 RegEx，您可以执行以下操作：

import re

strs = (
    "I'm the good boy",
    "I'm the good girl",
    "I'm the bad boy",
    "I'm the really good boy")
    
for s in strs:
    if re.match("I'm the .+ boy", s):
        print("Yes, it is, yeah")
    else:
        print("It's actually not")

印刷品

Yes, it is, yeah
It's actually not
Yes, it is, yeah
Yes, it is, yeah

Answer 2

这是我发现有效的方法。

我有一个文本文件，里面有这两行（我知道你有）：

I'm the good boy
I'm the bad boy

我写的（用注释解释它是如何工作的）：

with open("testing.txt", 'r') as file:#Open the text file, do stuff and then close it when done
    row_counter = 0
    for row in file: #Go through each line in the file
        row_counter +=1
        if "I'm the" in row: #Check to see if a line in your file if it has "I'm the"
            if "boy" in row: #Narrows down to find a line that also contains "boy"
                print(f"Line {row_counter}") #In forms you which line(s) have "I'm the" and "boy" in them

输出为：

Line 1
Line 2

表示文本文件中的两行都包含“I'm the”和“boy”。

Answer 3

您可以使用 re.search 来找到匹配项。还 enumerate 保留索引并且只返回 yes 是所有匹配发生。

import re
stro = "iam good boy"
target = "iam boy"

def finder():
    for i,e in enumerate(target.split()):
        if re.search(e, stro):
            if  i == len(target.split()) - 1:
                return("yes")  
        else:
            return("no") 
  
finder()
# Yes

按字符串的一部分查找字符串

3 个答案: