如何使用python中的PyMYSQL將數據存儲到數據庫中

Question

我在抓取一個網站並從中獲取公司詳細信息，現在我試圖將數據存儲到數據庫中。但我得到了一些錯誤，如

raise InternalError(errno, errorvalue) 
pymysql.err.InternalError: (1054, "Unknown column 'companyaddress' in 'field list'") 

這裏是我的代碼

for d in companydetail: 
    lis = d.find_all('li') 
    companyname = lis[0].get_text().strip() 
    companyaddress = lis[1].get_text().strip() 
    companycity = lis[2].get_text().strip() 
try: 
    companypostalcode = lis[3].get_text().strip() 
    companypostalcode = companypostalcode.replace(",","") 

except: 
    companypostalcode = lis[3].get_text().strip() 
try: 
    companywebsite = lis[4].get_text().strip() 
except IndexError: 
    companywebsite = 'null' 
print (companyname)       
print (companyaddress) 
print (companycity) 
print (companypostalcode) 
print (companywebsite) 
try: 
    with connection.cursor() as cursor: 
    print ('saving to db') 
    cursor.execute("INSERT INTO company(companyname,address,city,pincode,website) VALUES (companyname,companyaddress,companycity,companypostalcode,companywebsite)") 
    connection.commit() 
    connection.close()        

我得到我的數據，我想，但我不能夠將數據存儲到數據庫中。 結果我得到的同時進行打印（公司名稱）和打印（campanyaddress）是：

NINGBO BOIGLE DIGITAL TECHNOLOGY CO.,LTD. 
TIANYUAN INDUSTRIAL ZONE CIXI NINGBO 
ZHEJIANGNINGBO 
315325 
http://www.boigle.com.cn 

Answer 1

你不能簡單地使用查詢字符串中的變量名稱爲你做：

cursor.execute("INSERT INTO company(companyname,address,city,pincode,website) VALUES (companyname,companyaddress,companycity,companypostalcode,companywebsite)") 

相反，通過你的變量到查詢使其參數：

params = (companyname, companyaddress, companycity, companypostalcode, companywebsite) 
cursor.execute(""" 
    INSERT INTO 
     company 
     (companyname, address, city, pincode, website) 
    VALUES 
     (%s, %s, %s, %s, %s) 
""", params) 

Answer 2

在

cursor.execute("INSERT INTO company(companyname,address,city,pincode,website) VALUES (companyname,companyaddress,companycity,companypostalcode,companywebsite)") 

第二個括號中的值被解釋爲表字段，而不是python變量。嘗試

cursor.execute("""INSERT INTO company(
      companyname,address,city,pincode,website) 
     VALUES (%s, %s, %s, %s, %s)""", 
     (companyname, companyaddress, companycity, 
     companypostalcode, companywebsite)) 

改爲。你可能也想諮詢the docs。