小编R.h*_*hui的帖子

我试图使用刮,但我有一个问题.

从six.moves导入xmlrpc_client作为xmlrpclib

ImportError:无法导入名称xmlrpc_client

然后,我尝试了pip install --upgrade six scrape,但是:

  Found existing installation: six 1.4.1
    DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
Uninstalling six-1.4.1:
Exception:
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/pip/basecommand.py", line 211, in main
status = self.run(options, args)
  File "/Library/Python/2.7/site-packages/pip/commands/install.py", line 311, in run
root=options.root_path,
  File "/Library/Python/2.7/site-packages/pip/req/req_set.py", line 640, in …

我有这样的数据:

>Px016979
MSPWMKKVFLQCMPKLLMMRRTKYSLPDYDDTFVSNGYTNELEMSRDSLT
DAFGNSKEDSGDYRKSPAPEDDMVGAGAYQRPSVTESENMLPRHLSPEVA
AALQSVRFIAQHIKDADKDNEVVEDWKFMSMVLDRFFLWLFTIACFVGTF
GIIFQSPSLYDTRVPVDQQISSIPMRKNNFFYPKDIETIGIIS
>Px016980
MQFIKKVLLIALTLSGAMGISREKRGLIFPPTSLYGTFLAIAVPIDIPDK
NVFVSYNFESNYSTLNNITEIDEVLFPNLPVVTARHSRSITRELAYTVLE
TKFKEHGLGGRECLLRNICEAAETPLHHNGLLGHIMHIVFTPSSSAEEGL
DDEYYEAEASGRAGSCARYEELCPVGLFDLITRIVEFKHT
>Px002185
MLSPSVAIKVQVLYIGKVRISQRKVPDTLIDDALVKFVHHEAEKVKANML
RRHSLLSSTGTSIYSSESAENLNEDKTKTDTSEHNIFLMMLLRAHCEAKQ
LRHVHDTAENRTEFLNQYLGGSTIFMKAKRSLSSGFDQLLKRKSSRDEGS
GLVLPVKKVT
>Px006321
MFPGRTIGIMITASHNLEPDNGVKLVDPDGEMLDGSWEEIATRMANVRYL
PMSLITKFLVNSYY

我想要做的是,如果我有数字> Px016979或我可以得到它下面的数据.像这样:

>Px016979
MSPWMKKVFLQCMPKLLMMRRTKYSLPDYDDTFVSNGYTNELEMSRDSLT
DAFGNSKEDSGDYRKSPAPEDDMVGAGAYQRPSVTESENMLPRHLSPEVA
AALQSVRFIAQHIKDADKDNEVVEDWKFMSMVLDRFFLWLFTIACFVGTF
GIIFQSPSLYDTRVPVDQQISSIPMRKNNFFYPKDIETIGIIS

我是Python新手.

#coding:utf-8
import os,re


a =   """ 
    >Px016979 
    MSPWMKKVFLQCMPKLLMMRRTKYSLPDYDDTFVSNGYTNELEMSRDSLT 
    DAFGNSKEDSGDYRKSPAPEDDMVGAGAYQRPSVTESENMLPRHLSPEVA 
    AALQSVRFIAQHIKDADKDNEVVEDWKFMSMVLDRFFLWLFTIACFVGTF 
    GIIFQSPSLYDTRVPVDQQISSIPMRKNNFFYPKDIETIGIIS 
    >Px016980 
    MQFIKKVLLIALTLSGAMGISREKRGLIFPPTSLYGTFLAIAVPIDIPDK 
    NVFVSYNFESNYSTLNNITEIDEVLFPNLPVVTARHSRSITRELAYTVLE 
    TKFKEHGLGGRECLLRNICEAAETPLHHNGLLGHIMHIVFTPSSSAEEGL 
    DDEYYEAEASGRAGSCARYEELCPVGLFDLITRIVEFKHT"
    >Px002185
    MLSPSVAIKVQVLYIGKVRISQRKVPDTLIDDALVKFVHHEAEKVKANML
    RRHSLLSSTGTSIYSSESAENLNEDKTKTDTSEHNIFLMMLLRAHCEAKQ
    LRHVHDTAENRTEFLNQYLGGSTIFMKAKRSLSSGFDQLLKRKSSRDEGS
    GLVLPVKKVT
    >Px006321
    MFPGRTIGIMITASHNLEPDNGVKLVDPDGEMLDGSWEEIATRMANVRYL
    PMSLITKFLVNSYY

    """

  b = '>Px016979'


  matchbj = re.match( r'$b(.*?)>',a,re.M|re.I)

  print matchbj.group()

我的代码无法正常工作.我有两个问题:

1. 我认为我的数据有回车,所以我的代码无法正常工作.

2. 我不知道如何在Python正则表达式中使用变量.如果我写re.match( r'>Px016797(.*?)>',a,re.M|re.I)它可以工作,但我需要使用变量.

谢谢.