python mysqldb表更新不工作

我是一个PythonNoob，在我对维德做了一些情绪分析之后，我在更新表的MySQLdb操作方面遇到了麻烦。脚本如下所示：

#!/usr/bin/env python
from nltk.tokenize import sent_tokenize
from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
import MySQLdb as my
try:
    db = my.connect(host="*",    
                    user="*",         
                    passwd="*",  
                    db="*")        
    cur = db.cursor()
    cur.execute("SELECT id,content FROM text where relscore >=100")
    for row in cur.fetchall():
        tableid = row[0]
        textin = row[1].rstrip('\n') + ' '
        sentences = sent_tokenize(textin)
        analyzer = SentimentIntensityAnalyzer()
        sum = 0
        count = 0
        for sentence in sentences:
            vs = analyzer.polarity_scores(sentence)
            count += 1
            sum += vs['compound']
        avg = sum / count
        cur.execute("update text set sentiment = %s where id = %s",(avg,tableid))
    db.close()

 except my.Error as e:
    print(e)

当我在没有try/except的情况下运行这个时，它将按预期运行，不会出现错误，但是在数据库中没有更新值。我添加了try/except来尝试访问来自mysql的任何错误，但是我得到了一个语法错误

     except my.Error as e:
                         ^
 IndentationError: unindent does not match any outer indentation level

我不明白这一点，因为它似乎与try的缩进级别相匹配，而且它看起来像我找到的示例。但就像我说的，我是个笨蛋，所以我可能错过了一些明显的东西

---

我已经用调试器验证了select语句正在工作，avg正在计算，并且已经验证了用户对db和表具有必要的权限。有人可以帮忙吗？

您必须在执行查询后提交更改（在关闭光标之前）：

---

至于

try…except

block：在

except

word之前有额外的空间。

您必须在执行查询之后（关闭光标之前）提交更改：

---

至于

try…except

block：在

except

word之前有多余的空格。

除了my之外，前面还有空格。错误为e:

拆下它并重新测试

#!/usr/bin/env python
from nltk.tokenize import sent_tokenize
from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
import MySQLdb as my
try:
    db = my.connect(host="*", user="*", passwd="*", db="*")        

    cur = db.cursor()

    cur.execute("SELECT `id`, `content` FROM text WHERE `relscore`>=100")

    for row in cur.fetchall():
        tableid = row[0]
        textin = row[1].rstrip('\n') + ' '
        sentences = sent_tokenize(textin)
        analyzer = SentimentIntensityAnalyzer()
        sum = 0
        count = 0

        for sentence in sentences:
            vs = analyzer.polarity_scores(sentence)
            count += 1
            sum += vs['compound']

        avg = sum / float(count)

        cur.execute("UPDATE text SET `sentiment` = %s WHERE `id` = %s", (avg,tableid))

    db.commit()
    cur.close()
    db.close()

except Exception as e:
    print(e)

---

您之前有一个空格，但我的错误为e:

拆下它并重新测试

#!/usr/bin/env python
from nltk.tokenize import sent_tokenize
from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
import MySQLdb as my
try:
    db = my.connect(host="*", user="*", passwd="*", db="*")        

    cur = db.cursor()

    cur.execute("SELECT `id`, `content` FROM text WHERE `relscore`>=100")

    for row in cur.fetchall():
        tableid = row[0]
        textin = row[1].rstrip('\n') + ' '
        sentences = sent_tokenize(textin)
        analyzer = SentimentIntensityAnalyzer()
        sum = 0
        count = 0

        for sentence in sentences:
            vs = analyzer.polarity_scores(sentence)
            count += 1
            sum += vs['compound']

        avg = sum / float(count)

        cur.execute("UPDATE text SET `sentiment` = %s WHERE `id` = %s", (avg,tableid))

    db.commit()
    cur.close()
    db.close()

except Exception as e:
    print(e)

---

好啊显然，它必须是db.commit。这就成功了。谢谢，好的。显然，它必须是db.commit。这就成功了。谢谢。前面有一个空格，除了我的。错误为e:。删除并再次测试。除my之外，前面有一个空格。错误为e:。移除并再次测试它