Python：如何讀取段落的每一行並復制具有特定單詞的行

Question

有一段我需要閱讀，我需要復制只有關鍵字的行。

段落是這樣的：

aa
a
aaa
aaaaa
[new,aaa] < name of the file with path ] //asabbsjk
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[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

試試這幾行代碼：

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

或一個班輪：

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

Answer 2

如果您嘗試從文件中讀取段落：

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]