poppy章鱼 发表于 2022-1-19 16:20:31

求助：python逐行读取，删除以某个字符开头的字符串

求助，怎么实现这个功能？感激不尽~

输入文件示例：

OG0000000: aa|TbCa001702 aa|TbCa001961 aa|TbCa002485 bb|TbCa002794 bb|TbCa003025 cc|TbCa003100 dd|TbCa003129 ee|TbCa003206 bb|TbCa003139
OG0000001: aa|AT1G08070 aa|AT1G20230 bb|AT1G31920 bb|AT1G59720 bb|AT1G68930 cc|AT1G74630 cc|AT2G01510 dd|AT2G03880 dd|AT2G29760
OG0000002: aa|R002G044500 aa|R002G044700 bb|R002G044900 bb|R002G045000 bb|R002G079000 cc|R003G073100 dd|R004G270600 ee|R007G319800

输出结果：
OG0000000: aa|TbCa001702 aa|TbCa001961 aa|TbCa002485 bb|TbCa002794 bb|TbCa003025 bb|TbCa003139
OG0000001: aa|AT1G08070 aa|AT1G20230 bb|AT1G31920 bb|AT1G59720 bb|AT1G68930
OG0000002: aa|R002G044500 aa|R002G044700 bb|R002G044900 bb|R002G045000 bb|R002G079000

假如每行中冒号之后，以空格分割的字符串'|'管道符前面为cc, dd, ee，则删除这个字符串，其他的正常输出。
比如第一行中cc|TbCa003100 dd|TbCa003129 ee|TbCa003206 以cc, dd，ee开头，则删除，只输出其他的aa|TbCa001702 aa|TbCa001961 aa|TbCa002485 bb|TbCa002794 bb|TbCa003025 bb|TbCa003139

大马强 发表于 2022-1-19 16:32:54

datas = ["OG0000000: aa|TbCa001702 aa|TbCa001961 aa|TbCa002485 bb|TbCa002794 bb|TbCa003025 cc|TbCa003100 dd|TbCa003129 ee|TbCa003206 bb|TbCa003139",
         "OG0000001: aa|AT1G08070 aa|AT1G20230 bb|AT1G31920 bb|AT1G59720 bb|AT1G68930 cc|AT1G74630 cc|AT2G01510 dd|AT2G03880 dd|AT2G29760",
         "OG0000002: aa|R002G044500 aa|R002G044700 bb|R002G044900 bb|R002G045000 bb|R002G079000 cc|R003G073100 dd|R004G270600 ee|R007G319800"]

list1 = []
for data in datas:
    for each_group in data.split():
      if not each_group.startswith(("ee", "dd", "cc")):
            list1.append(each_group)
    print(" ".join(list1))
    list1 = []
"""
输出
OG0000000: aa|TbCa001702 aa|TbCa001961 aa|TbCa002485 bb|TbCa002794 bb|TbCa003025 bb|TbCa003139
OG0000001: aa|AT1G08070 aa|AT1G20230 bb|AT1G31920 bb|AT1G59720 bb|AT1G68930
OG0000002: aa|R002G044500 aa|R002G044700 bb|R002G044900 bb|R002G045000 bb|R002G079000
"""

poppy章鱼 发表于 2022-1-19 16:56:03

大马强 发表于 2022-1-19 16:32


感谢您的帮助，祝新年快乐~

大马强 发表于 2022-1-19 17:43:59

poppy章鱼 发表于 2022-1-19 16:56
感谢您的帮助，祝新年快乐~

新年快乐{:10_297:}
页: [1]
查看完整版本: 求助：python逐行读取，删除以某个字符开头的字符串