当我尝试使用 pip 升级 matplotlib 时，它输出：
Downloading/unpacking matplotlib from https://pypi.python.org/packages/source/m/matplotlib/matplotlib-1.4.0.tar.gz#md5=1daf7f2123d94745feac1a30b210940c
Downloading matplotlib-1.4.0.tar.gz (51.2MB): 51.2MB downloaded
Running setup.py (path:/tmp/pip_build_root/matplotlib/setup.py) egg_info for package matplotlib
============================================================================
Edit setup.cfg to change the build options
BUILDING MATPLOTLIB
matplotlib: yes [1.4.0]
python: yes [2.7.6 (default, Mar 22 2014, 22:59:38) [GCC
4.8.2]]
platform: yes [linux2]
REQUIRED DEPENDENCIES AND EXTENSIONS
numpy: yes [version 1.8.2]
six: yes [using six version 1.7.3]
dateutil: yes [using dateutil version 2.2]
tornado: yes [using tornado version 4.0.1]
pyparsing: yes [using pyparsing version 2.0.2]
pycxx: yes [Couldn't import. Using local copy.]
libagg: yes [pkg-config information for 'libagg' could not
be found. Using local copy.]
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip_build_root/matplotlib/setup.py", line 154, in <module>
result = package.check()
File "setupext.py", line 940, in check
if 'No such file or directory\ngrep:' in version:
TypeError: argument of type 'NoneType' is not iterable
Complete output from command python setup.py egg_info:
============================================================================
Edit setup.cfg to change the build options
BUILDING MATPLOTLIB
matplotlib: yes [1.4.0]
python: yes [2.7.6 (default, Mar 22 2014, 22:59:38) [GCC
4.8.2]]
platform: yes [linux2]
REQUIRED DEPENDENCIES AND EXTENSIONS
numpy: yes [version 1.8.2]
six: yes [using six version 1.7.3]
dateutil: yes [using dateutil version 2.2]
tornado: yes [using tornado version 4.0.1]
pyparsing: yes [using pyparsing version 2.0.2]
pycxx: yes [Couldn't import. Using local copy.]
libagg: yes [pkg-config information for 'libagg' could not
be found. Using local copy.]
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip_build_root/matplotlib/setup.py", line 154, in <module>
result = package.check()
File "setupext.py", line 940, in check
if 'No such file or directory\ngrep:' in version:
TypeError: argument of type 'NoneType' is not iterable
----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip_build_root/matplotlib
Storing debug log for failure in /home/username/.pip/pip.log
在日志的尾部它说：
Exception information:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/pip-1.5.6-py2.7.egg/pip/basecommand.py", line 122, in main
status = self.run(options, args)
File "/usr/local/lib/python2.7/dist-packages/pip-1.5.6-py2.7.egg/pip/commands/install.py", line 278, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File "/usr/local/lib/python2.7/dist-packages/pip-1.5.6-py2.7.egg/pip/req.py", line 1229, in prepare_files
req_to_install.run_egg_info()
File "/usr/local/lib/python2.7/dist-packages/pip-1.5.6-py2.7.egg/pip/req.py", line 325, in run_egg_info
command_desc='python setup.py egg_info')
File "/usr/local/lib/python2.7/dist-packages/pip-1.5.6-py2.7.egg/pip/util.py", line 697, in call_subprocess
% (command_desc, proc.returncode, cwd))
InstallationError: Command python setup.py egg_info failed with error code 1 in /tmp/pip_build_root/matplotlib
为什么失败了？
非常感谢！
