由最后的“ number_”分隔

分类：编程问答

如何解决由最后的“ number_”分隔

你好，我有一个df，例如

Collecting matplotlib
  Using cached matplotlib-3.3.2.tar.gz (37.9 MB)
Requirement already satisfied: certifi>=2020.06.20 in c:\users\owner\appdata\local\programs\python\python39\lib\site-packages (from matplotlib) (2020.6.20)
Requirement already satisfied: cycler>=0.10 in c:\users\owner\appdata\local\programs\python\python39\lib\site-packages (from matplotlib) (0.10.0)
Requirement already satisfied: kiwisolver>=1.0.1 in c:\users\owner\appdata\local\programs\python\python39\lib\site-packages (from matplotlib) (1.2.0)
Requirement already satisfied: numpy>=1.15 in c:\users\owner\appdata\local\programs\python\python39\lib\site-packages (from matplotlib) (1.19.2)
Collecting pillow>=6.2.0
  Using cached Pillow-7.2.0.tar.gz (39.1 MB)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.3 in c:\users\owner\appdata\local\programs\python\python39\lib\site-packages (from matplotlib) (2.4.7)
Requirement already satisfied: python-dateutil>=2.1 in c:\users\owner\appdata\local\programs\python\python39\lib\site-packages (from matplotlib) (2.8.1)
Requirement already satisfied: six in c:\users\owner\appdata\local\programs\python\python39\lib\site-packages (from cycler>=0.10->matplotlib) (1.15.0)
Building wheels for collected packages: matplotlib,pillow
  Building wheel for matplotlib (setup.py) ... done
  Created wheel for matplotlib: filename=matplotlib-3.3.2-cp39-cp39-win_amd64.whl size=8427385 sha256=2281d01056220920876048430b733d3eb9cd2e230beb23f8abddf43f8c192979
  Stored in directory: c:\users\owner\appdata\local\pip\cache\wheels\a6\65\5d\e2634e905fc0a7d4486dfc5acd9e68b48aae52634d82c5ed69
  Building wheel for pillow (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: 'c:\users\owner\appdata\local\programs\python\python39\python.exe' -u -c 'import sys,setuptools,tokenize; sys.argv[0] = '"'"'C:\\Users\\Owner\\AppData\\Local\\Temp\\pip-install-xtbfbx_6\\pillow\\setup.py'"'"'; __file__='"'"'C:\\Users\\Owner\\AppData\\Local\\Temp\\pip-install-xtbfbx_6\\pillow\\setup.py'"'"';f=getattr(tokenize,'"'"'open'"'"',open)(__file__);code=f.read().replace('"'"'\r\n'"'"','"'"'\n'"'"');f.close();exec(compile(code,__file__,'"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\Owner\AppData\Local\Temp\pip-wheel-2boayhms'
       cwd: C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\
  Complete output (172 lines):
  C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py:42: RuntimeWarning: Pillow 7.2.0 does not support Python 3.9 and does not provide prebuilt Windows binaries. We do not recommend building from source on Windows.
    warnings.warn(
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.9
  creating build\lib.win-amd64-3.9\PIL
  copying src\PIL\BdfFontFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\BlpImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\BmpImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\BufrStubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ContainerIO.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\CurImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\DcxImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\DdsImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\EpsImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ExifTags.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\features.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\FitsStubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\FliImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\FontFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\FpxImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\FtexImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\GbrImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\GdImageFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\GifImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\GimpGradientFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\GimpPaletteFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\GribStubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\Hdf5StubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\IcnsImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\IcoImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\Image.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageChops.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageCms.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageColor.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageDraw.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageDraw2.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageEnhance.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageFilter.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageFont.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageGrab.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageMath.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageMode.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageMorph.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageOps.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImagePalette.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImagePath.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageQt.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageSequence.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageShow.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageStat.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageTk.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageTransform.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImageWin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\ImtImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\IptcImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\Jpeg2KImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\JpegImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\JpegPresets.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\McIdasImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\MicImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\MpegImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\MpoImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\MspImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PaletteFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PalmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PcdImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PcfFontFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PcxImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PdfImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PdfParser.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PixarImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PngImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PpmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PsdImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PSDraw.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\PyAccess.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\SgiImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\SpiderImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\SunImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\TarIO.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\TgaImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\TiffImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\TiffTags.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\WalImageFile.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\WebPImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\WmfImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\XbmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\XpmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\XVThumbImagePlugin.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\_binary.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\_tkinter_finder.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\_util.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\_version.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\__init__.py -> build\lib.win-amd64-3.9\PIL
  copying src\PIL\__main__.py -> build\lib.win-amd64-3.9\PIL
  running egg_info
  writing src\Pillow.egg-info\PKG-INFO
  writing dependency_links to src\Pillow.egg-info\dependency_links.txt
  writing top-level names to src\Pillow.egg-info\top_level.txt
  reading manifest file 'src\Pillow.egg-info\SOURCES.txt'
  reading manifest template 'MANIFEST.in'
  warning: no files found matching '*.c'
  warning: no files found matching '*.h'
  warning: no files found matching '*.sh'
  warning: no previously-included files found matching '.appveyor.yml'
  warning: no previously-included files found matching '.coveragerc'
  warning: no previously-included files found matching '.editorconfig'
  warning: no previously-included files found matching '.readthedocs.yml'
  warning: no previously-included files found matching 'codecov.yml'
  warning: no previously-included files matching '.git*' found anywhere in distribution
  warning: no previously-included files matching '*.pyc' found anywhere in distribution
  warning: no previously-included files matching '*.so' found anywhere in distribution
  no previously-included directories found matching '.ci'
  writing manifest file 'src\Pillow.egg-info\SOURCES.txt'
  running build_ext


  The headers or library files could not be found for zlib,a required dependency when compiling Pillow from source.

  Please see the install instructions at:
     https://pillow.readthedocs.io/en/latest/installation.html

  Traceback (most recent call last):
    File "C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py",line 864,in <module>
      setup(
    File "c:\users\owner\appdata\local\programs\python\python39\lib\site-packages\setuptools\__init__.py",line 165,in setup
      return distutils.core.setup(**attrs)
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\core.py",line 148,in setup
      dist.run_commands()
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\dist.py",line 966,in run_commands
      self.run_command(cmd)
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\dist.py",line 985,in run_command
      cmd_obj.run()
    File "c:\users\owner\appdata\local\programs\python\python39\lib\site-packages\wheel\bdist_wheel.py",line 290,in run
      self.run_command('build')
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\cmd.py",line 313,in run_command
      self.distribution.run_command(command)
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\dist.py",in run_command
      cmd_obj.run()
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\command\build.py",line 135,in run
      self.run_command(cmd_name)
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\cmd.py",in run_command
      cmd_obj.run()
    File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\command\build_ext.py",line 340,in run
      self.build_extensions()
    File "C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py",line 694,in build_extensions
      raise RequiredDependencyException(f)
  __main__.RequiredDependencyException: zlib

  During handling of the above exception,another exception occurred:

  Traceback (most recent call last):
    File "<string>",line 1,in <module>
    File "C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py",line 918,in <module>
      raise RequiredDependencyException(msg)
  __main__.RequiredDependencyException:

  The headers or library files could not be found for zlib,a required dependency when compiling Pillow from source.

  Please see the install instructions at:
     https://pillow.readthedocs.io/en/latest/installation.html


  ----------------------------------------
  ERROR: Failed building wheel for pillow
  Running setup.py clean for pillow
Successfully built matplotlib
Failed to build pillow
Installing collected packages: pillow,matplotlib
    Running setup.py install for pillow ... error
    ERROR: Command errored out with exit status 1:
     command: 'c:\users\owner\appdata\local\programs\python\python39\python.exe' -u -c 'import sys,'"'"'exec'"'"'))' install --record 'C:\Users\Owner\AppData\Local\Temp\pip-record-z_802pca\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\owner\appdata\local\programs\python\python39\Include\pillow'
         cwd: C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\
    Complete output (174 lines):
    C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py:42: RuntimeWarning: Pillow 7.2.0 does not support Python 3.9 and does not provide prebuilt Windows binaries. We do not recommend building from source on Windows.
      warnings.warn(
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.9
    creating build\lib.win-amd64-3.9\PIL
    copying src\PIL\BdfFontFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\BlpImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\BmpImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\BufrStubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ContainerIO.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\CurImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\DcxImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\DdsImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\EpsImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ExifTags.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\features.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\FitsStubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\FliImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\FontFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\FpxImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\FtexImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\GbrImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\GdImageFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\GifImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\GimpGradientFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\GimpPaletteFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\GribStubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\Hdf5StubImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\IcnsImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\IcoImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\Image.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageChops.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageCms.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageColor.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageDraw.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageDraw2.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageEnhance.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageFilter.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageFont.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageGrab.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageMath.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageMode.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageMorph.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageOps.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImagePalette.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImagePath.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageQt.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageSequence.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageShow.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageStat.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageTk.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageTransform.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImageWin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\ImtImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\IptcImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\Jpeg2KImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\JpegImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\JpegPresets.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\McIdasImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\MicImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\MpegImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\MpoImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\MspImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PaletteFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PalmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PcdImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PcfFontFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PcxImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PdfImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PdfParser.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PixarImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PngImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PpmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PsdImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PSDraw.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\PyAccess.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\SgiImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\SpiderImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\SunImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\TarIO.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\TgaImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\TiffImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\TiffTags.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\WalImageFile.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\WebPImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\WmfImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\XbmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\XpmImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\XVThumbImagePlugin.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\_binary.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\_tkinter_finder.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\_util.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\_version.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\__init__.py -> build\lib.win-amd64-3.9\PIL
    copying src\PIL\__main__.py -> build\lib.win-amd64-3.9\PIL
    running egg_info
    writing src\Pillow.egg-info\PKG-INFO
    writing dependency_links to src\Pillow.egg-info\dependency_links.txt
    writing top-level names to src\Pillow.egg-info\top_level.txt
    reading manifest file 'src\Pillow.egg-info\SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    warning: no files found matching '*.c'
    warning: no files found matching '*.h'
    warning: no files found matching '*.sh'
    warning: no previously-included files found matching '.appveyor.yml'
    warning: no previously-included files found matching '.coveragerc'
    warning: no previously-included files found matching '.editorconfig'
    warning: no previously-included files found matching '.readthedocs.yml'
    warning: no previously-included files found matching 'codecov.yml'
    warning: no previously-included files matching '.git*' found anywhere in distribution
    warning: no previously-included files matching '*.pyc' found anywhere in distribution
    warning: no previously-included files matching '*.so' found anywhere in distribution
    no previously-included directories found matching '.ci'
    writing manifest file 'src\Pillow.egg-info\SOURCES.txt'
    running build_ext


    The headers or library files could not be found for zlib,a required dependency when compiling Pillow from source.

    Please see the install instructions at:
       https://pillow.readthedocs.io/en/latest/installation.html

    Traceback (most recent call last):
      File "C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py",in <module>
        setup(
      File "c:\users\owner\appdata\local\programs\python\python39\lib\site-packages\setuptools\__init__.py",in setup
        return distutils.core.setup(**attrs)
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\core.py",in setup
        dist.run_commands()
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\dist.py",in run_commands
        self.run_command(cmd)
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\dist.py",in run_command
        cmd_obj.run()
      File "c:\users\owner\appdata\local\programs\python\python39\lib\site-packages\setuptools\command\install.py",line 61,in run
        return orig.install.run(self)
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\command\install.py",line 546,in run
        self.run_command('build')
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\cmd.py",in run_command
        self.distribution.run_command(command)
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\dist.py",in run_command
        cmd_obj.run()
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\command\build.py",in run
        self.run_command(cmd_name)
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\cmd.py",in run_command
        cmd_obj.run()
      File "c:\users\owner\appdata\local\programs\python\python39\lib\distutils\command\build_ext.py",in run
        self.build_extensions()
      File "C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py",in build_extensions
        raise RequiredDependencyException(f)
    __main__.RequiredDependencyException: zlib

    During handling of the above exception,another exception occurred:

    Traceback (most recent call last):
      File "<string>",in <module>
      File "C:\Users\Owner\AppData\Local\Temp\pip-install-xtbfbx_6\pillow\setup.py",in <module>
        raise RequiredDependencyException(msg)
    __main__.RequiredDependencyException:

    The headers or library files could not be found for zlib,a required dependency when compiling Pillow from source.

    Please see the install instructions at:
       https://pillow.readthedocs.io/en/latest/installation.html


    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\owner\appdata\local\programs\python\python39\python.exe' -u -c 'import sys,'"'"'exec'"'"'))' install --record 'C:\Users\Owner\AppData\Local\Temp\pip-record-z_802pca\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\owner\appdata\local\programs\python\python39\Include\pillow' Check the logs for full command output.`

，我想用最后一个“数字”来分隔它

并获取：

COL1
SEQ_1.1_0
SEQ2.2_2
AB_1_2.3_3
ACC.3_3

到目前为止，我尝试过：

COL1      COL2
SEQ_1.1   0
SEQ2.2    2
AB_1_2.3  3
ACC.3     3

这是我使用且需要使用的代码

strsplit(df$COL1,"*.[0-9]_")

解决方法

使用import numpy as np import xarray as xr import pandas as pd import time def make_ds(freq): size = 100000 times = pd.date_range('2000-01-01',periods=size,freq=freq) ds = xr.Dataset({ 'foo': xr.DataArray( data = np.random.random(size),dims = ['time'],coords = {'time': times} )}) return ds for f in ["1s","1Min","10Min"]: ds = make_ds(f) start = time.time() ds_r = ds.resample({'time':"1H"}).mean() print(f,'xr',str(time.time() - start)) start = time.time() ds_r = ds.to_dataframe().resample("1H").mean() print(f,'pd',str(time.time() - start)) ：

: 1s xr 0.040313720703125
: 1s pd 0.0033435821533203125
: 1Min xr 0.5757267475128174
: 1Min pd 0.0025794506072998047
: 10Min xr 6.798743486404419
: 10Min pd 0.0029947757720947266

tidyr::extract使用here中的正则表达式，负前瞻。

tidyr::extract(df,COL1,c('COL1','COL2'),regex = '(.*)_(.*)',convert = TRUE)

#      COL1 COL2
#1  SEQ_1.1    0
#2   SEQ2.2    2
#3 AB_1_2.3    3
#4    ACC.3    3
,

使用substr：

> dat                  
        COL1
1  SEQ_1.1_0
2   SEQ2.2_2
3 AB_1_2.3_3
4    ACC.3_3
> dat$COl2 <- substr(dat$COL1,nchar(dat$COL1),nchar(dat$COL1)+1)
> dat$COL1 <- substr(dat$COL1,1,nchar(dat$COL1)-2)
> dat
      COL1 COl2
1  SEQ_1.1    0
2   SEQ2.2    2
3 AB_1_2.3    3
4    ACC.3    3
>
,

这是base R的{​​{1}}解决方案：

数据：

sub

解决方案：

df <- data.frame(
  COL1 = c("SEQ_1.1_0","SEQ2.2_2","AB_1_2.3_3","ACC.3_3")
)

结果：

df$COL2 <- sub(".*(\\d$)","\\1",df$COL1) 
df$COL1 <- sub("_\\d$","",df$COL1)

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