topic Re: Check does file exist in folder in Python Questions

Check does file exist in folder

JohnMcConalogue — Fri, 20 Apr 2018 15:12:21 GMT

I am writing a python script which deletes a file if it is present in a particular folder.

I want to be able to check if the file exists first, and if it exists I want to delete the file but if it doesn't exist I want to do nothing.

Anyone any ideas on this.

Re: Check does file exist in folder

KevinDunlop — Fri, 20 Apr 2018 15:29:47 GMT

Check out this article. https://www.cyberciti.biz/faq/python-delete-remove-file-if-exists-on-disk/

Re: Check does file exist in folder

DanPatterson_Retired — Fri, 20 Apr 2018 15:43:29 GMT

Use arcpy...

arcpy.Exists.... http://desktop.arcgis.com/en/arcmap/latest/analyze/arcpy-functions/exists.htm

then there is the whole arcpy.ListFeatureClasses, ListRasters, Listwhatever if you need things specific to geodatabases etc.

ie http://desktop.arcgis.com/en/arcmap/latest/analyze/arcpy-functions/listfeatureclasses.htm

Re: Check does file exist in folder

JoshuaBixby — Sat, 21 Apr 2018 12:32:24 GMT

Just use Delete—Help | ArcGIS Desktop first thing. If the data set or file/folder exists, Delete takes care of business. If it doesn't exist, Delete still succeeds so there is no error to trap. The Result—Help | ArcGIS Desktop from Delete will include a warning if the file doesn't exist, but the operation still succeeds.

Re: Check does file exist in folder

JohnMcConalogue — Mon, 23 Apr 2018 10:14:44 GMT

Thanks for the reply guys

A modification of Kevin's seemed to do the trick.