把a1修改为a2
arcpy.AlterField_management("图框_point", ‘a1‘, ‘a2‘, ‘a2别名‘)
AlterField_management (in_table, field, {new_field_name},
{new_field_alias}, {field_type}, {field_length}, {field_is_nullable}, {clear_field_alias})
原文：https://www.cnblogs.com/gisoracle/p/11750209.html