I am currently taking ESRI's Python Scripting for Geoprocessing Workflows. I have following their step by step however there seem to be a problem that I am getting an error.
import arcpy #Set geoprocessing environments arcpy.env.workspace = "C:/Student/PythonGP10_0/Data/SanJuan.gdb)" arcpy.env.overwriteOutput = True #Create list of feature classes in SanJuan.gdb fclList = arcpy.ListFeatureClasses() #Create a loop to buffer Lakes and Streams bufferList =  for fc in fcList: if fc == "Lakes" or fc == "Streams": arcpy.Buffer_analysis(fc, fc + "Buffer", "1000 meters") bufferList.append(fc + "Buffer") arcpy.Union_analysis(bufferList, "WaterBuffers")
The error I get here from the IDE Window shows the error:
PythonWin 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)] on win32. Portions Copyright 1994-2008 Mark Hammond - see 'Help/About PythonWin' for further copyright information. >>> import arcpy Traceback (most recent call last): File "C:\Python27\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py", line 326, in RunScript exec codeObject in __main__.__dict__ File "C:\Student\PythonGP10_0\Scripts\BufferWater.py", line 9, in <module> for fc in fcList: TypeError: 'NoneType' object is not iterable