I have a big .pyt script (python toolbox) and now i trying split it to many files (1 file – 1 tool).
In single .pyt file everything works perfectly, but when file is splited i get this message:
AttributeError: 'module' object has no attribute 'Parameter'.
Structure of files:
My Catalog:
-- toolbox.pyt
-- toolpackage:
---- configurator.py
---- __init__.py
toolbox.pyt:
# This Python file uses the following encoding: utf-8
import arcpy
from toolpackage.configurator import ToolboxConfigurator
class Toolbox(object):
def __init__(self):
"""Define the toolbox (the name of the toolbox is the name of the .pyt file)."""
self.label = "label"
self.alias = "Tools"
# List of tool classes associated with this toolbox
self.tools = [ToolboxConfigurator]
configurator.py:
# This Python file uses the following encoding: utf-8
import arcpy
class ToolboxConfigurator(object):
def __init__(self):
"""Define the tool (tool name is the name of the class)."""
self.label = u"config"
self.description = u""
self.canRunInBackground = False
def getParameterInfo(self):
"""Define parameter definitions"""
new_config_file = arcpy.Parameter(
displayName = u"?",
name = "new_config_file",
datatype = "GPBoolean",
parameterType = "Optional",
direction = "Input")
parameters = [new_config_file]
return parameters
def isLicensed(self):
"""Set whether tool is licensed to execute."""
return True
def updateParameters(self, parameters):
"""Modify the values and properties of parameters before internal validation
is performed. This method is called whenever a parameter has been changed."""
return
def updateMessages(self, parameters):
"""Modify the messages created by internal validation for each tool
parameter. This method is called after internal validation."""
return
def execute(self, parameters, messages):
"""The source code of the tool."""
__init__.py
is clear.
My error:
Traceback (most recent call last):
File "C:\tools_v4\toolpackage\configurator.py", line 15, in getParameterInfo
new_config_file = arcpy.Parameter(
AttributeError: 'module' object has no attribute 'Parameter'
Best Answer
This may not be the cause for everyone, but I've identified at least one set of triggers.
If the above are all true, the Python toolbox tool will show the
AttributeError: 'module' object has no attribute 'Parameter'
exception.Clearing out the history (or not logging it at all) will avoid the issue, probably why I didn't see this before as I rarely retain my history.
Right-clicking on the toolbox and using refresh will clear the error, but it will come up again in the future as long as the list above remains true. However, if the tool is importing the tool class from a separate tool file (like the case above) a refresh will not be enough. For that, I had to force it by including a
reload
in the .pyt, and then a refresh on the toolbox will clear the error.