>>> d5 {'python': 3.5, 'hello': 'world'} >>> d5.items() dict_items([('python', 3.5), ('hello', 'world')]) >>> list(d5.items()) [('python', 3.5), ('hello', 'world')] >>> tuple(d5.items()) (('python', 3.5), ('hello', 'world')) >>> str(d5.items())...
print(list(directions_upper)) 1. 2. 3. 4. 5. 6. 7. 8. 我们将会使用list()函数,来将返回的 map 转换成 list 列表: 输出: ['NORTH', 'EAST', 'SOUTH', 'WEST'] 1. 如果返回函数很简单,更 Python 的方式是使用 lambda 函数: directions = ["north", "east", "south", "west"] direction...
add(elem)# 向集合中添加一个元素remove(elem)# 从集合中删除一个元素,如果集合中不包含该元素会抛出KeyError错误discard(elem)# 如果集合中包含该元素则删除它,这个方法明显比remove()好用pop()# 由于set集合是无序的,因此该方法会移除并返回一个随机元素,而不是像list.pop()移除并返回最后一个元素clear()# ...
Because the Field Map is a complicated parameter, working with it in Python can also be complicated. The best way to interact with field mapping in Python scripting is with theFieldMappingsobject. In Python, most geoprocessing tool parameter types are seen as simple numbers or strings (specifying...
inputfields = [field.name for field in arcpy.ListFields(fc) if not field.required] for inputfield in inputfields: # Iterate through each FieldMap in the FieldMappings # for i in range(fieldmappings.fieldCount): fieldmap = fieldmappings.getFieldMap(i) ...
该脚本将调用 ListBrokenDataSources() 函数仅查找损坏的数据源,并执行相应的修复操作。 import arcpy mxd = arcpy.mapping.MapDocument(r"C:\Project\Project.mxd") for lyr in arcpy.mapping.ListBrokenDataSources(mxd): if lyr.supports("DATASOURCE"): if lyr.dataSource == r"C:\Project\Data\...
许多 arcpy.mapping 列表函数(例如ListDataFrames、ListLayers、ListLayoutElements和ListTableViews)都含有通配符参数,允许您对名称属性进行过滤。这些列表函数始终会返回一个 Python 列表对象。为引用 Python 列表中的地图元素,您可以通过循环遍历列表,也可以在函数末尾追加一个索引号。如果使用通配符并指定唯一名称,则返回...
df=arcpy.mapping.ListDataFrames(mxd,"图层")[0] inLayer=arcpy.mapping.ListLayers(mxd, "", df) forlayerininLayer: #打印图层名称 printlayer.name 1 2 3 4 5 6 7 8 9 >>> mxd.activeView u'PAGE_LAYOUT' >>> mxd.activeView u'Layers' ...
The following data is returned in JSON format by the service.jobs A list of JobSummary objects. Type: Array of JobSummary objects nextToken The pagination token from the previous API call. Type: String Length Constraints: Minimum length of 1. Maximum length of 1024. Pattern: [a-zA-Z_0...
Python Code: # Define a function 'max_by' that takes a list 'lst' and a function 'fn'.# It uses the 'max' function to find the maximum value in 'lst' based on the results of applying 'fn' to each element.defmax_by(lst,fn):returnmax(map(fn,lst))# Call the 'max_by' functi...