Collecting BusinessHours==1.01 1 location(s) to search for versions of BusinessHours: * https://pypi.python.org/simple/businesshours/ Getting page https://pypi.python.org/simple/businesshours/ Analyzing links from page https://pypi.python.org/simple/businesshours/ Found link https://pypi.python.org/packages/49/5f/c0bf771ab86a1e2d195d951417b58bf7e9bc306d92570a0eaba9d19b716a/BusinessHours-1.2.tar.gz#md5=514ecbb23d4aa8e0cea9f013e28c8fce (from https://pypi.python.org/simple/businesshours/), version: 1.2 Could not find a version that satisfies the requirement BusinessHours==1.01 (from versions: 1.2) Cleaning up... No matching distribution found for BusinessHours==1.01 Exception information: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/pip/basecommand.py", line 215, in main status = self.run(options, args) File "/usr/lib/python3/dist-packages/pip/commands/wheel.py", line 199, in run if not wb.build(): File "/usr/lib/python3/dist-packages/pip/wheel.py", line 749, in build self.requirement_set.prepare_files(self.finder) File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 380, in prepare_files ignore_dependencies=self.ignore_dependencies)) File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 554, in _prepare_file require_hashes File "/usr/lib/python3/dist-packages/pip/req/req_install.py", line 278, in populate_link self.link = finder.find_requirement(self, upgrade) File "/usr/lib/python3/dist-packages/pip/index.py", line 514, in find_requirement 'No matching distribution found for %s' % req pip.exceptions.DistributionNotFound: No matching distribution found for BusinessHours==1.01