名称：name＆＃x27; select_pour_point＆＃x27;未定义

Question

尝试为每个倒数设置变量时，我会收到此错误。这是一个

cur_point = select_pour_point（pour_points，name_field，name）

nameRorr：name'select_pour_point'未定义

帮助！

import shedtools as st

# Directories
SCRATCH = "C:\\SCRATCH"
OUT_FOLDER = "C:\\WATERSHEDS" 

# inputs
POUR_POINTS = "C:\\Hawaii_DEM\\Hawaii.shp"
FLOW_DIRECTION = "C:\\Hawaii_DEM\\hawaii_flwdir" 
STATS_RASTER = "C:\\HawaiiRFGrids_mm\\RF_MM_BI_Ann"                    
RASTER_NAME = "stats"
NAME_FIELD = "Id" 
STATISTICS = "MEAN"

with arcpy.da.SearchCursor(POUR_POINTS, NAME_FIELD) as cursor:
    for point in cursor:
        name = str(point[0])
        print "Working on pour point %s" % (name)
        cur_point = select_pour_point(POUR_POINTS, NAME_FIELD, name) 
        shed_raster = make_watershed_raster(FLOW_DIRECTION, cur_point, name, SCRATCH)

我收到的错误是：

Traceback (most recent call last):
  File "C:\\exercise_5.py", line 30, in <module>
    cur_point = select_pour_point(POUR_POINTS, NAME_FIELD, name)
NameError: name 'select_pour_point' is not defined

第30行是：

cur_point = select_pour_point(POUR_POINTS, NAME_FIELD, name) 

Answer 1

您使用导入SHEDTOOLS作为ST导入您的shedtools.py脚本。因此，您需要前缀select_pour_point和make_watershed_polygon带有st

• 。

与您的错误无关，而是打开您的arcpy.da.searchcursor使用with，以确保使用后再次关闭。

import shedtools as st

# ...

with arcpy.da.SearchCursor(POUR_POINTS, NAME_FIELD) as cursor:
    for point in cursor:
        name = str(point[0])
        print "Working on pour point %s" % (name)
        cur_point = st.select_pour_point(POUR_POINTS, NAME_FIELD, name) 
        shed_raster = st.make_watershed_raster( \
                  FLOW_DIRECTION, cur_point, name, SCRATCH)

---

另外，您也可以使用以下方式使用以下方式使用以下方面的功能以：

• 从shedtools导入您的函数，而不是将功能从shedtools导入您的功能，请select_pour_point，make_watershed_raster，

如果这样做，则无需前缀：

from shedtools import select_pour_point, make_watershed_raster

# ...

with arcpy.da.SearchCursor(POUR_POINTS, NAME_FIELD) as cursor:
    for point in cursor:
        name = str(point[0])
        print "Working on pour point %s" % (name)
        cur_point = select_pour_point(POUR_POINTS, NAME_FIELD, name) 
        shed_raster = make_watershed_raster(FLOW_DIRECTION, cur_point, name, SCRATCH)