def updateParameters(self): """Modify the values and properties of parameters before internal validation is performed. This method is called whenever a parmater has been changed.""" if self.params[0].value: list = [] zip = zipfile.ZipFile(self.params[0].value, "r") for zfile in zip.namelist(): list.append(zfile.name) self.params[2].filter.list = list
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class ToolValidator: """Class for validating a tool's parameter values and controlling the behavior of the tool's dialog.""" def __init__(self): """Setup arcpy and the list of tool parameters.""" import arcpy import zipfile self.params = arcpy.GetParameterInfo() def initializeParameters(self): """Refine the properties of a tool's parameters. This method is called when the tool is opened.""" return def updateParameters(self): """Modify the values and properties of parameters before internal validation is performed. This method is called whenever a parmater has been changed.""" if self.params[0].value: list = [] zip = zipfile.ZipFile(self.params[0].value, "r") for zfile in zip.namelist(): list.append(zfile.name) self.params[2].filter.list = list def updateMessages(self): """Modify the messages created by internal validation for each tool parameter. This method is called after internal validation.""" return