Afaik我不在防火墙后面。我安装了anaconda，以及python idle 3.6
这是我为'pip install -vvv piperclip'获得的控制台输出：
Collecting piperclip
1 location(s) to search for versions of piperclip:
* https://pypi.python.org/simple/piperclip/
Getting page https://pypi.python.org/simple/piperclip/
Looking up "https://pypi.python.org/simple/piperclip/" in the cache
No cache entry available
Starting new HTTPS connection (1): pypi.python.org
"GET /simple/piperclip/ HTTP/1.1" 404 28063
Status code 404 not in [200, 203, 300, 301]
Could not fetch URL https://pypi.python.org/simple/piperclip/: 404 Client Error: Not Found for url: https://pypi.python.org/simple/piperclip/ - skipping
Could not find a version that satisfies the requirement piperclip (from versions: )
Cleaning up...
No matching distribution found for piperclip
Exception information:
Traceback (most recent call last):
File "/Users/admin/anaconda/lib/python3.5/site-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/Users/admin/anaconda/lib/python3.5/site-packages/pip/commands/install.py", line 310, in run
wb.build(autobuilding=True)
File "/Users/admin/anaconda/lib/python3.5/site-packages/pip/wheel.py", line 750, in build
self.requirement_set.prepare_files(self.finder)
File "/Users/admin/anaconda/lib/python3.5/site-packages/pip/req/req_set.py", line 370, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "/Users/admin/anaconda/lib/python3.5/site-packages/pip/req/req_set.py", line 522, in _prepare_file
finder, self.upgrade, require_hashes)
File "/Users/admin/anaconda/lib/python3.5/site-packages/pip/req/req_install.py", line 268, in populate_link
self.link = finder.find_requirement(self, upgrade)
File "/Users/admin/anaconda/lib/python3.5/site-packages/pip/index.py", line 491, in find_requirement
'No matching distribution found for %s' % req
pip.exceptions.DistributionNotFound: No matching distribution found for piperclip