[英]Remove string starting from specific characters in python
我的文件中包含以下数据:
Neighbor V TblVer InQ OutQ Up/Down State/PfxRcd
10.230.2.91 4 136041 0 0 35w6d 1178
CHN_RAY_901_1AC_CASR903R004# exit
Neighbor V TblVer InQ OutQ Up/Down State/PfxRcd
10.229.5.239 4 890585 0 0 7w5d 1177
10.229.6.239 4 890585 0 0 7w5d 1173
CHN_MAR_905_1AC_CASR903R066# exit
10.229.30.110
我必须删除从CHN开始的行,并输出如下:
Neighbor V TblVer InQ OutQ Up/Down State/PfxRcd
10.230.2.91 4 136041 0 0 35w6d 1178
Neighbor V TblVer InQ OutQ Up/Down State/PfxRcd
10.229.5.239 4 890585 0 0 7w5d 1177
10.229.6.239 4 890585 0 0 7w5d 1173
10.229.30.110
我努力了:
b = ' '.join(word for word in content.split(' ') if not word.startswith('CHN'))
我要从中删除CHN的内容是我的数据,但是它不起作用。
您能否提出实现此目标的方法? 不使用正则表达式就可以做到吗? 提前致谢。
使用单个行而不是整个文件内容可能会更容易:
with open("file") as f:
lines = [line for line in f if not line.startswith("CHN")]
filtered = "".join(lines)
file = """ Neighbor V TblVer InQ OutQ Up/Down State/PfxRcd
10.230.2.91 4 136041 0 0 35w6d 1178
CHN_RAY_901_1AC_CASR903R004# exit
Neighbor V TblVer InQ OutQ Up/Down State/PfxRcd
10.229.5.239 4 890585 0 0 7w5d 1177
10.229.6.239 4 890585 0 0 7w5d 1173
CHN_MAR_905_1AC_CASR903R066# exit
10.229.30.110
"""
output = [line for line in file.splitlines() if not line.startswith('CHN')]
print "\n".join(output)
for line in file:
if not line[0:3] == "CHN":
write_line
else:
remove_line
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