ArcGis Python modifies field information based on existing data

Suppose the original data is as follows

 

Field 1	Field 2	Field 3	Field 4	New field
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？
you	it is good	Is it	？

 

 

1. Open the attribute table

2. Add new fields

3. Open the Python editor

     Left-click on the title of the new field to select all, and then right-click on the title to display the field calculator.

4. Settings editor

     The parsing program is changed to: python

     Check [Display code block]

5. Fill in the code

Fill in the [pre-logic script code]:

all_data = {}
def xgmc(dlmc):
  if dlmc not in all_data:
    all_data[dlmc]=0
  all_data[dlmc]+=1
  return dlmc+str(all_data[dlmc])

6. Call in the call box

Fill in the code:

xgmc(!字段1!)

 

7. Click [OK]