topic Re: Why is c:\Temp1 not a folder? in Python Questions

Why is c:\Temp1 not a folder?

JohannesBierer — Wed, 13 Aug 2014 13:15:07 GMT

Defined a Parameter as data type folder and put in c:\Temp1 which results in this error message?

File "R:\Karto\zGIS\Projekte\MaP_FFH_Richtlinie_Toolentwicklung\python\FangenSymDiff.py", line 50, in <module>

arcpy.FeatureClassToShapefile_conversion(Aenderung_MToS, Aenderung_MToS_CopyFeatures)

File "c:\program files (x86)\arcgis\desktop10.1\arcpy\arcpy\conversion.py", line 2550, in FeatureClassToShapefile

raise e

ExecuteError: Fehler bei Ausführung. Parameter sind ungültig.

ERROR 000840: Der Wert ist kein(e) Ordner.

Fehler beim Ausführen von (FeatureClassToShapefile).

Re: Why is c:\Temp1 not a folder?

DanPatterson_Retired — Wed, 13 Aug 2014 13:26:41 GMT

"c:\temp1"

must be written in raw format

r"c:\temp1"

with double backslashes

"c:\\temp1"

or with forward slashes

"c:/temp1"

of course this assumes you have a folder of this name in the first place

Re: Why is c:\Temp1 not a folder?

JohannesBierer — Wed, 13 Aug 2014 13:43:04 GMT

Hi Dan,

the script is used in the toolbox Folder as Parameter (Folder Data Type) - so the input there sould be right?

Re: Why is c:\Temp1 not a folder?

DanPatterson_Retired — Wed, 13 Aug 2014 14:03:41 GMT

I never assume and always convert path selections

aPath = aPath.replace("\\",:/")

when I select aPath from a tool within Arctoolbox...just incorporate within your script

Re: Why is c:\Temp1 not a folder?

JohannesBierer — Wed, 13 Aug 2014 14:35:36 GMT

ok, why .replace("\\",:/")?

Isn't it old, new?

Re: Why is c:\Temp1 not a folder?

DanPatterson_Retired — Wed, 13 Aug 2014 14:50:02 GMT

in python the backslash is used as a literal...meaning if you want a backslash you have to preceed the backslash you want with another one (check python documentation), so the expression I gave you means "replace the backslash with a forward slash"

Re: Why is c:\Temp1 not a folder?

curtvprice — Thu, 14 Aug 2014 15:47:19 GMT

It is disconcerting because if there is no corresponding escape sequence, the string is passed along unmodified. The escape sequences are case sensitive, just to add to the confusion.

>>> print "C:\TEMP C:\temp"

C:\TEMP C: emp

Here's the help page I always refer people to:

ArcGIS Help 10.2 - Paths explained: Absolute, relative, UNC, and URL‌

Re: Why is c:\Temp1 not a folder?

curtvprice — Thu, 14 Aug 2014 15:49:48 GMT

Dan, did you mean:

aPath = aPath.replace("\\","/")

Re: Why is c:\Temp1 not a folder?

AdamCox1 — Thu, 14 Aug 2014 16:58:59 GMT

Personally, I always use one of the following methods and don't have any trouble anymore

1. put an r in front of the path and it will be interpreted literally.

path = r"C:\Temp1"

2. os.path.join() is great also, especially for constructing dynamic paths because you can pass variables as arguments. Also good if cross platform considerations are an issue

path = os.path.join("C:","Temp1")

3. also good for dynamic paths, because you can through variables in for the directory names:

path = r"{0}\{1}".format("C:","Temp1")

4. finally, it's not very concise, but you can always use os.sep

path = "C:" +os.sep+"Temp1"

Hope this is helpful!

Re: Why is c:\Temp1 not a folder?

JohannesBierer — Fri, 15 Aug 2014 08:25:55 GMT

Very helpful, thanks.

To tell you the truth, there was no path problem, I used two times one input parameter 🙂