pip安装，熊猫，硒，无处不在的Deepcopy错误

Question

I've been recently getting deepcopy errors on my Windows 2008 R2 server running python 2.7.

Even a simple pip install -U selenium gives this error

  Traceback (most recent call last):
File "c:\python27\lib\runpy.py", line 162, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "c:\python27\lib\runpy.py", line 72, in _run_code
exec code in run_globals
File "C:\Python27\Scripts\pip.exe\__main__.py", line 5, in <module>
File "c:\python27\lib\site-packages\pip\__init__.py", line 14, in <module>
from pip.utils import get_installed_distributions, get_prog
 File "c:\python27\lib\site-packages\pip\utils\__init__.py", line 27, in <module>
from pip._vendor import pkg_resources
 File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 71, in <module>
__import__('pip._vendor.packaging.requirements')
 File "c:\python27\lib\site-packages\pip\_vendor\packaging\requirements.py", line 9, in <module>
from pip._vendor.pyparsing import (
File "c:\python27\lib\site-packages\pip\_vendor\pyparsing.py", line 3462, in <module>
_reBracketExpr = Literal("[") + Optional("^").setResultsName("negate") + Group( OneOrMore( _charRange | _singleChar ) ).setResultsName("body") + "]"
File "c:\python27\lib\site-packages\pip\_vendor\pyparsing.py", line 884, in setResultsName
newself = self.copy()
File "c:\python27\lib\site-packages\pip\_vendor\pyparsing.py", line 858, in copy
cpy = copy.copy( self )
 AttributeError: 'module' object has no attribute 'copy'

When I run the command mydriver=webdriver.Firefox() in python shell, I get this error

Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\webdriver.py",line 51, in __init__
self.profile = firefox_profile or FirefoxProfile()
 File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\firefox_profile.py", line 67, in __init__
self.default_preferences = copy.deepcopy(
AttributeError: 'module' object has no attribute 'deepcopy'

I get similar errors while importing pandas.

Answer 1

This thing can happen when a copy.py or copy.pyc exists in the folder you run your Python scripts. So when you import copy it actually imports the copy.py in your working directory. Make sure don't use copy.py as your filename.