字典語法錯誤“無法分配給函數調用”

Question

我正在嘗試使用以下代碼找到“CrudeRate”的最大值及其關聯的“State_name”：

import arcpy
arcpy.env.workspace = "C:\\"

shp = r"C:\\USCancer2000.dbf"
rows = arcpy.SearchCursor(shp)
CrudeRate = "CrudeRate"
State_name = "State_name"

out_dict = {}
for row in rows:
    for C in CrudeRate:
        lst = []
        if row.CrudeRate == C:
            lst.append(row.CrudeRate)
        out_dict(C) = max(lst)
del row,rows
for CrudeRate in out_dict:
    print(CrudeRate, State_name)

但是當我運行它時，我得到：

SyntaxError: Can't assign to function call

代碼有什么問題？ 我該如何解決？

Answer 1

分配 dict 值時，您需要使用括號而不是括號。

out_dict[C] = max(lst)