如何从 python 中的文本文件中读取单词/字符串？

Question

Means I wanted to read all the line which contains the same word or a sentence and then print them in python 3

Please help me with a easy way to do so.

Answer 1

This can be done using the basic functions of Python and a for loop.

Here is an example using random sentences for example:

"Hello world good bye world. I am happy to see you. Hola world how are you."

Let's say the sentences are contained in a file as file.txt. Using open() you can read your.txt file. Then just iterate over each string and print the line containing the word you need:

with open("file.txt") as f: 
    for i in f:
        for j in i.split():
            if j == "world":
                print(i)

Output:

Hello world good bye world.
Hola world how are you.