topic Re: Map document has no len() in Python Questions

Map document has no len()

PSGeo — Sat, 11 Dec 2021 06:24:49 GMT

well... I have been trying to use add-in to make simple button that had a date and current mxd name to features in the fcs in the gdb in use. still not working. I really don't understand how to use making addin.

I decided to give it a go using Arctoolbox as it looks simpler.

In first place with three input variables: date; file location (folder path); and file.

It works.

But I want to reduce the number of input variables. I was thinking to use 'current' and skip the file location and file manual input. The help on this says is that is not possible to use it in the background, therefore I made it run on foreground... however when I tried gave the following error.

I need some guidance on this because maybe it is impossible to use toolbox for this or maybe there is a workaround... anything.

cheers

Python errors:
Traceback Info:
File "\\eusc.europa.eu\ATLAS\Home\psoares\Documents\python\filesupporttools\uploadcurrentMXD_vectors_TOOLBOX_version.py", line 93, in <module>
issue_code = os.path.basename(mxdInicio)

Error Info:
<type 'exceptions.TypeError'>: object of type 'MapDocument' has no len()

GP errors:

line 93 code is the following:

    # mxd and environment; and gdb sources and targets
    mxdInicio = arcpy.mapping.MapDocument('current')
    mxdPath = mxdInicio.filePath


    issue_code = os.path.basename(mxdInicio) ## line 93
    issue_code = issue_code[0:19]
    issue_code = issue_code.replace("_"," ")
    mxdPathList = mxdPath.split(os.sep)

    IssueGDB =  "\\".join(mxdPathList[:-1])
    print IssueGDB‍‍‍‍‍‍‍‍‍‍‍‍

Re: Map document has no len()

DanPatterson_Retired — Thu, 26 Mar 2020 13:30:34 GMT

issue_code = os.path.basename(mxdInicio)

Did you try to print issue_code? If it doesn't print anything, it can't be sliced on the next line since it has no length and you can only slice things that have a __len__ property

Re: Map document has no len()

PSGeo — Thu, 26 Mar 2020 13:44:52 GMT

indeed... the print (arcpy.AddMessage (mxdInicio)) gives me this:

I assume that 'current' doesn't work even if make the tool to run in foreground.

do u agree?

Re: Map document has no len()

JoshuaBixby — Thu, 26 Mar 2020 15:29:08 GMT

You appear to want to work with the MXD path, so why not just use the mxdPath variable that you have already defined and set?

Re: Map document has no len()

PSGeo — Thu, 26 Mar 2020 16:11:00 GMT

the mxd path is from the current mxd... how do I get it? if the :

arcpy.mapping.MapDocument('current')

apparently doesn't work for toolboxes.

I don't set it anywhere else in the script

Re: Map document has no len()

JoshuaBixby — Thu, 26 Mar 2020 16:14:32 GMT

I have regularly used arcpy.mapping.MapDocument("CURRENT") in scripts for toolboxes. The only issue I have had to watch for is when someone has opened a new MXD and not saved it yet because in that case MapDocument.filePath returns an empty string.

Re: Map document has no len()

DanPatterson_Retired — Thu, 26 Mar 2020 16:19:05 GMT

ArcGIS Pro has it... you can even open a Jupyter Notebook in your project for quick testing and 'dir' away on objects to find out what they have.

Pro has some nifty features... don't know if they are available in arcmap

Re: Map document has no len()

PSGeo — Thu, 26 Mar 2020 16:27:46 GMT

So what is wrong there in what i am doing?

Re: Map document has no len()

PSGeo — Thu, 26 Mar 2020 16:32:09 GMT

i have no arcgis pro

Re: Map document has no len()

DanPatterson_Retired — Sat, 11 Dec 2021 06:24:52 GMT

Then add these lines to your script and devolve the project path relative to the running script in the toolbox.

import sys

script = sys.argv[0]

Then you can find the location of the script and if your project is located 'relative' to it, you should be able to construct the project name and location.

script

'C:\\Git_Dan\\npgeom\\_load_sample_.py'‍‍‍

Re: Map document has no len()

JoshuaBixby — Thu, 26 Mar 2020 17:15:08 GMT

What do you get with

print (arcpy.AddMessage(mxdInicio.filePath))

Re: Map document has no len()

DanPatterson_Retired — Thu, 26 Mar 2020 18:02:47 GMT

apparently he didn't try... I highlighted those in my previous post

Re: Map document has no len()

JoshuaBixby — Thu, 26 Mar 2020 19:30:03 GMT

Sometime the second time is the charm, or is it the third....

Re: Map document has no len()

PSGeo — Sat, 11 Dec 2021 06:24:54 GMT

Hi guys,

thanks for the:

print (arcpy.AddMessage(mxdInicio.filePath))

with that i figure it out the problem:

    mxdInicio = arcpy.mapping.MapDocument('current')
    arcpy.AddMessage(mxdInicio.filePath)
    mxdPath = mxdInicio.filePath

    issue_code = os.path.basename(mxdPath)‍‍‍‍‍‍‍‍ # i figure it out that I was calling the wrong variable...‍‍‍‍‍

by the way, I took this time because the question came from the other side of the Atlantic

thanks guys, tool is finished.

cheers

Pedro

Re: Map document has no len()

JoshuaBixby — Fri, 27 Mar 2020 15:01:47 GMT

It is common practice/courtesy to mark comments "Helpful" if people's comments are, well, helpful. Looking over the discussion now, not a single comment has been marked Helpful. Also, if one comment was particularly helpful, that one can be marked Correct to close out the discussion. Or, the question can be marked "Assumed Answered".

Re: Map document has no len()

PSGeo — Fri, 27 Mar 2020 15:31:48 GMT

You are right and I apologize

Re: Map document has no len()

DanPatterson_Retired — Fri, 27 Mar 2020 16:30:54 GMT

https://community.esri.com/message/918013-re-map-document-has-no-len?commentID=918013#comment-918013

and next time please read the code samples, with the highlights... you could have been done much sooner