ProgrammingError：無法改寫'set'

我正在使用Python將Excel數據導入到PostgreSQL中，並且運行時出現編程錯誤。我研究了這個問題，發現它與postgreSQL有關。有人可以提供幫助嗎？ProgrammingError：無法改寫'set'

import psycopg2 
import xlrd 

book = xlrd.open_workbook("T:\data.xlsx") 
sheet = book.sheet_by_name("HCSData") 
database = psycopg2.connect (database = "", user="") 

cursor = database.cursor() 
delete = """Drop table if exists "Python".hcsdata""" 
print (delete) 
mydata = cursor.execute(delete) 

cursor.execute('''CREATE TABLE "Python".hcsdata 
    (DCAD_Prop_ID varchar(55), 
    Address VARCHAR(50), 
    Addition   VARCHAR(100), 
    Block text, 
    Lot integer, 
    Permit_Num   varchar(55), 
    Permit_Date    date, 
    Foundation_Date date, 
    Frame_Date date, 
    Final_Date date, 
    HCS  varchar(55), 
    Project_ID integer 
    );''') 
print "Table created successfully" 

query = """INSERT INTO "Python".hcsdata (DCAD_Prop_ID,Address,Addition, Block, Lot, 
Permit_Num,Permit_Date, Foundation_Date, Frame_Date, Final_Date, HCS,Project_ID) 
VALUES (%s, %s, %s, %s, %s, %s, %s,%s, %s, %s, %s, %s)""" 

for r in range(1, sheet.nrows): 
    DCAD_Prop_ID = sheet.cell(r,0).value 
    Address = sheet.cell(r,1).value 
    Addition = sheet.cell(r,2).value 
    Block = sheet.cell(r,3).value 
    Lot = sheet.cell(r,4).value 
    Permit_Num = sheet.cell(r,5).value 
    Permit_Date = None if not sheet.cell(r,6).value else xlrd.xldate.xldate_as_datetime(sheet.cell(r,6).value,book.datemode) 
    Foundation_Date = None if not sheet.cell(r,7).value else xlrd.xldate.xldate_as_datetime(sheet.cell(r,7).value,book.datemode) 
    Frame_Date = None if not sheet.cell(r,8).value else xlrd.xldate.xldate_as_datetime(sheet.cell(r,8).value,book.datemode) 
    Final_Date = None if not sheet.cell(r,9).value else xlrd.xldate.xldate_as_datetime(sheet.cell(r,9).value,book.datemode) 
    HCS = sheet.cell(r,10).value 
    Project_ID =sheet.cell(r,11).value 

    values = (DCAD_Prop_ID,set(Address),Addition, Block, Lot, 
Permit_Num,Permit_Date, Foundation_Date, Frame_Date, Final_Date, HCS,Project_ID) 

    cursor.execute(query, values) 

cursor.close() 

database.commit() 

database.close() 

print "" 
print "All Done! Bye, for now." 
print "" 
columns = str(sheet.ncols) 
rows = str(sheet.nrows) 
print "Done"

和錯誤的Python顯示的是：

Drop table if exists "Python".hcsdata 
Table created successfully 

Traceback (most recent call last): 
    File "C:\Users\Programming\PythonSQLNew\HCSData.py", line 53, in <module> 
cursor.execute(query, values) 
ProgrammingError: can't adapt type 'set'

來源

2016-10-31 Jake Wagner

是你確定'set（Address）'？如果你需要unicity，你應該做'list（set（Address））'。但我懷疑它應該只是「地址」。 –

感謝Jean，你認爲錯誤是在Address嗎？ –

我很確定。嘗試傳遞別的東西。我會那樣做。 –

查詢似乎期望所有的字符串：

query = """INSERT INTO "Python".hcsdata (DCAD_Prop_ID,Address,Addition, Block, Lot, 
Permit_Num,Permit_Date, Foundation_Date, Frame_Date, Final_Date, HCS,Project_ID) 
VALUES (%s, %s, %s, %s, %s, %s, %s,%s, %s, %s, %s, %s)"""

在你的價值觀有幾乎只有字符串的僑民脫穎而出：

values = (DCAD_Prop_ID,set(Address),Addition, Block, Lot, 
Permit_Num,Permit_Date, Foundation_Date, Frame_Date, Final_Date, HCS,Project_ID)

我承認該消息是神祕的，但邏輯告訴我們只是做：

values = (DCAD_Prop_ID,Address,Addition, Block, Lot, 
Permit_Num,Permit_Date, Foundation_Date, Frame_Date, Final_Date, HCS,Project_ID)

（因爲沒有必要把Address在set，它似乎是像其他領域的字符串）

來源

2016-10-31 17:49:43

ProgrammingError：無法改寫'set'

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