一般來說升級pip的方式為：

python - m pip install--upgrade pip

有時候會有以下報錯：

Exception:

Traceback (most recent call last):

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\basecommand.py", line 215, in main

status = self.run(options, args)

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\commands\install.py", line 342, in run

prefix=options.prefix_path,

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\req\req_set.py", line 784, in install

**kwargs

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\req\req_install.py", line 851, in install

self.move_wheel_files(self.source_dir, root=root, prefix=prefix)

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\req\req_install.py", line 1064, in move_wheel_files

isolated=self.isolated,

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\wheel.py", line 462, in move_wheel_files

generated.extend(maker.make(spec))

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\distlib\scripts.py", line 372, in make

self._make_script(entry, filenames, options=options)

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\distlib\scripts.py", line 276, in _make_script

self._write_script(scriptnames, shebang, script, filenames, ext)

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\distlib\scripts.py", line 212, in _write_script

launcher = self._get_launcher('t')

File "F:\laoshiji\python_project\datamining-learning\decision_tree\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\distlib\scripts.py", line 351, in _get_launcher

result = finder(distlib_package).find(name).bytes

AttributeError: 'NoneType' object has no attribute 'bytes'

此時我們可以改用以下方式：

python -m pip install -U--force-reinstall pip