1、测试数据及脚本
root@DESKTOP-1N42TVH:/home/test# ls test.py test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt a 3 d s 1 j z c m q e i 3 4 k h f 3 root@DESKTOP-1N42TVH:/home/test# cat test.py fp=open("test.txt","r") sample=fp.readlines() file=open("result.txt","w") for i in sample: if "3" in i: file.write(i) fp.close() file.close()
2、运行程序，提取包含3的行
root@DESKTOP-1N42TVH:/home/test# ls test.py test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt a 3 d s 1 j z c m q e i 3 4 k h f 3 root@DESKTOP-1N42TVH:/home/test# cat test.py fp=open("test.txt","r") sample=fp.readlines() file=open("result.txt","w") for i in sample: if "3" in i: file.write(i) fp.close() file.close() root@DESKTOP-1N42TVH:/home/test# python3 test.py root@DESKTOP-1N42TVH:/home/test# ls result.txt test.py test.txt root@DESKTOP-1N42TVH:/home/test# cat result.txt a 3 d 3 4 k h f 3
3、提取以3开头的行
root@DESKTOP-1N42TVH:/home/test# ls test.py test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt a 3 d s 1 j z c m q e i 3 4 k h f 3 root@DESKTOP-1N42TVH:/home/test# cat test.py fp=open("test.txt","r") sample=fp.readlines() file=open("result.txt","w") for i in sample: if i.startswith("3"): file.write(i) fp.close() file.close() root@DESKTOP-1N42TVH:/home/test# python3 test.py root@DESKTOP-1N42TVH:/home/test# ls result.txt test.py test.txt root@DESKTOP-1N42TVH:/home/test# cat result.txt 3 4 k
4、提取以3结尾的行
root@DESKTOP-1N42TVH:/home/test# ls test.py test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt a 3 d s 1 j z c m q e i 3 4 k h f 3 root@DESKTOP-1N42TVH:/home/test# cat test.py fp=open("test.txt","r") sample=fp.readlines() file=open("result.txt","w") for i in sample: if i.endswith("3\n"): file.write(i) fp.close() file.close() root@DESKTOP-1N42TVH:/home/test# python3 test.py root@DESKTOP-1N42TVH:/home/test# ls result.txt test.py test.txt root@DESKTOP-1N42TVH:/home/test# cat result.txt h f 3
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