topic Re: Python directory question in Python Questions

Python directory question

MarcoPretorius1 — Fri, 14 Jun 2019 14:34:18 GMT

import arcpy
from arcpy import da
import os

attachTable = 'C:\users\user\Test2\pictures.gdb\pictures__ATTACH' # Table in GDB holding attatchments
origTable = 'C:\Users\user\Test2\pictures.gdb\pictures' # Layer in GDB holding features to which attatchments belong
nameField = 'Name' # Field where you want to save the photos
fileLocation = 'C:\Users\user\pictures\pics' # folder where you want to save the photos

# creates a cursor to search through the attachment tables; specify yu only wish to search those three fields
attachCursor = arcpy.da.SearchCursor(attachTable, ['DATA', 'ATT_NAME', 'REL_GLOBALID'])

# Begin searching the table and storing the actual images, movies, etc.
for attRow in attachCursor:
binaryRep = attRow[0]
filename = attRow[1]
relID = attRow[2]

# creates a cursor to sort the features; essentially to find a match fro the relID above
originCursor = arcpy.da.SearchCursor(origTable, ['GLOBALID', nameField])
for origRow in originCursor:
origID = origRow[0]
origName = origRow[1]
if origID == relID:
break

# Saves a file in the specified location tht contains the name chosen by the user for the attachment
open(fileLocation + os.sep + origName + ".jpg", 'wb').write(binaryRep.tobytes())

# deletes search cursor
del originCursor

ERROR

Traceback (most recent call last):
File "C:/Users/mpretorius/Desktop/att.py", line 28, in <module>
open(fileLocation + os.sep + origName + ".jpg", 'wb').write(binaryRep.tobytes())
IOError: [Errno 2] No such file or directory: u'C:\\Users\\user\\pictures\\pics\\HGC-2.jpg'

Can't seem to figure out what is wrong in this script. Any help appreciated!

Re: Python directory question

Egge-Jan_Pollé — Fri, 14 Jun 2019 14:55:17 GMT

Hi Marco Pretorius,

The quickest solution would be to replace all backward slashes in your directory paths to forward ones.

So 'C:\users\user\Test2\pictures.gdb\pictures__ATTACH' should become 'C:/users/user/Test2/pictures.gdb/pictures__ATTACH', etcetera.

And then save and run the script again 🙂

Does this solve your issue?

Cheers,

Egge-Jan

Re: Python directory question

MarcoPretorius1 — Fri, 14 Jun 2019 15:13:25 GMT

Getting this error

Traceback (most recent call last):
File "C:/Users/user/Desktop/att.py", line 28, in <module>
open(fileLocation + os.sep + origName + ".jpg", 'wb').write(binaryRep.tobytes())
IOError: [Errno 2] No such file or directory: u'C:/Users/user/pictures/pics/\\HGC-2.jpg'

Any further suggestions?

Re: Python directory question

JoshuaBixby — Fri, 14 Jun 2019 15:48:04 GMT

The Python open command will not be able to create a directory if it doesn't exist, just a file, so make sure all of the directories in the path exist prior to running that command.

Re: Python directory question

DanPatterson_Retired — Fri, 14 Jun 2019 16:24:54 GMT

for line numbers to facilitate references to script lines see

/blogs/dan_patterson/2016/08/14/script-formatting

Re: Python directory question

Egge-Jan_Pollé — Fri, 14 Jun 2019 16:48:32 GMT

The issue might be caused by the two backslashes in the filename: C:/Users/user/pictures/pics/\\HGC-2.jpg

You should try to find out where these come from.

Re: Python directory question

DanPatterson_Retired — Sat, 11 Dec 2021 10:17:01 GMT

You should have gotten failures way before you did.

You need to raw encode your paths little 'r'

p = 'C:\users\user\Test2\pictures.gdb\pictures__ATTACH'
  File "<ipython-input-2-3d412528dd89>", line 1
    p = 'C:\users\user\Test2\pictures.gdb\pictures__ATTACH'
       ^
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \uXXXX escape


p = r'C:\users\user\Test2\pictures.gdb\pictures__ATTACH'  # --- raw encoded

# use all forward slashes‍‍‍‍‍‍‍‍‍‍