Python：如何读取段落的每一行并复制具有特定单词的行

Question

我需要阅读一个段落，我需要复制只有关键字的行。段落是这样的：aaaaaaaaaaa[new,aaa] < name of the file with path ] //asabbsjkorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap[mod] <name of the file with path 我的算法：if keyword exists in the line :      copy that line else:       leave it

Answer 1

尝试这几行代码：

copy_lines= []

for line in paragraph.split('\n'):

    if keyword in line:

        copy_lines.append(line)

print(copy_lines)

或一张内衬：

copy_lines= [line for line in paragraph.split('\n') if keyword in line]

Answer 2

如果您尝试从文件中读取该段落：

keyword = "your_keyword"

with open("demofile.txt", "r") as f:

    line_list = f.readlines()

    magic_lines = [line for line in line_list if keyword in line]