读取文件cdays−4-test.txt 内容,去除空行和注释行后,以行为单位进行排序,并将
结果输出为cdays−4-result.txt。
- infile = file('mycd.cdc2','r')
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outfile = file('mycd.cdc2.out','w')
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str = infile.readline()
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while str:
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if (not str.startswith('#')) and str!="\n":
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outfile.write(str)
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str = infile.readline()
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infile.close()
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outfile.close()
语法点:
python没有null,判断非空用not
python读入的空行为"\n"
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