import arcpy import sys # 设置输入参数 input_features = arcpy.GetParameterAsText(0) # 输入要素类 output_features = arcpy.GetParameterAsText(1) # 输出要素类 minimum_area = arcpy.GetParameterAsText(2) # 面积阈值，单位为平方米 # 将面积阈值转换为浮点型 try: minimum_area = float(minimum_area) except ValueError: arcpy.AddError("面积阈值必须为数字！") sys.exit() # 创建要素图层并添加要素 arcpy.MakeFeatureLayer_management(input_features, "input_layer") arcpy.SelectLayerByAttribute_management("input_layer", "NEW_SELECTION", "Shape_Area < {}".format(minimum_area)) arcpy.CopyFeatures_management("input_layer", output_features) # 输出结果 arcpy.SetParameterAsText(3, output_features)运行错误：IndentationError: unexpected indent (批量删除小面积.py, line 8) 执行(删除小面)失败。请改正代码

这个错误是由于代码的缩进不正确导致的，建议按照以下方式修改代码：

import arcpy 
import sys 

# 设置输入参数
input_features = arcpy.GetParameterAsText(0) 
# 输入要素类 
output_features = arcpy.GetParameterAsText(1) 
# 输出要素类 
minimum_area = arcpy.GetParameterAsText(2) 
# 面积阈值，单位为平方米  

# 将面积阈值转换为浮点型 
try:     
    minimum_area = float(minimum_area) 
except ValueError:     
    arcpy.AddError("面积阈值必须为数字！")     
    sys.exit()  

# 创建要素图层并添加要素 
arcpy.MakeFeatureLayer_management(input_features, "input_layer") 
arcpy.SelectLayerByAttribute_management("input_layer", "NEW_SELECTION", "Shape_Area < {}".format(minimum_area)) 
arcpy.CopyFeatures_management("input_layer", output_features) 

# 输出结果 
arcpy.SetParameterAsText(3, output_features)

这样就可以避免缩进错误了。