Problem:  Unable to import arcpy

【解决方案】
Use one of the following solutions to resolve this issue.


• Change the association of Python to use 32-bit Python. For more information, refer to the following article, FAQ: Why do Python scripts fail on a machine with both ArcGIS for Server and Desktop Installed?
• Change the path to the Python.exe file in Windows' Environment Variables. Follow the steps below. 1. Access the Environment Variables. The location of the Environment Variables differs based on the operating system.

▪ Windows XP:
How To Manage Environment Variables in Windows XP - Microsoft Support.

▪ Windows 7 and 8:

a. Click the Start button, and right-click Computer.
b. Select Properties.
c. Click 'Advanced system settings'.
d. Click 'Environment Variables'.

2. Under the 'System variables' column, find the Path variable and click the Edit button.

3. In the 'Variable value' section, locate and remove any existing path to the Python.exe file. Remove only the text between the semicolons (;).

4. At the end of the 'Variable value' section, add a new semicolon and write the path to the Python.exe file installed by ArcGIS for Desktop: 'C:\Python27\ArcGIS10.x'.

5. Click OK.
• Add the path needed by modifying the .pth file. 1. Navigate to C:\Python27\ArcGIS10.x\Lib\site-packages.

2. Using a text editor, such as Notepad, open the Desktop10.x.pth file.

3. Verify the following lines are present in the text file:

C:\Program Files (x86)\ArcGIS\Desktop10.x\bin
C:\Program Files (x86)\ArcGIS\Desktop10.x\ArcPy
C:\Program Files (x86)\ArcGIS\Desktop10.x\ArcToolbox\Scripts


4. Add any of the missing paths to the file.

5. Save the .pth file.

• Repair the ArcGIS for Desktop installation. Follow the steps listed below. 1. Remove any pre-installed Python software.

2. There are two options for repairing ArcMap:

▪ Rerun the installation tool, and click the Repair radio button.



▪ Navigate to the Control Panel > Programs > Programs and Features > Uninstall a program, and select ArcMap. Click the Repair radio button.

If using PythonWin with pre-installed Python: Without ArcMap, the default installation path for PythonWin is: • C:\Python27\Lib\site-packages\pythonwin\Pythonwin.exe

Instead, PythonWin must be installed in the following path:

• C:\Python27\ArcGIS10.x\Lib\site-packages\pythonwin\Pythonwin.exe
To ensure the correct default path is used during installation, uninstall PythonWin, follow the previous step provided to repair ArcMap, and reinstall PythonWin.
If users have ArcGIS for Server installed on the same machine, a 64-bit Python is installed as well. This leads to the script calling the wrong bit version of Python.

Users are unable to select the default installation path for PythonWin during installation. The steps to repair ArcMap are crucial to ensure the correct destination path.



【其它相关参考】

1. ArcGIS Help: ArcGIS 10.1 for Desktop system requirements
2. ArcGIS Help: ArcGIS 10.2.x for Desktop system requirements
3. Support Services Blog: 64-bit vs. 32-bit Python explained

【创建及修改时间】
Created: 1/5/2015

Last Modified: 2/4/2015
【原文链接】
http://support.esri.com/en/kno ... 43846