tuple indices must be integers or slices, not str

HelloWorld picture HelloWorld · Oct 1, 2017 · Viewed 9.8k times · Source

I'm running into this issue when using mySQL. My result = [{'email': '[email protected]'}] but I'm getting an TypeError: tuple indices must be integers or slices, not str when I'm doing email = results[0]['email']

The thing is when I'm running this locally it works perfectly. How do I get [email protected]?

users is a table

Code:

cursor.execute('SELECT email FROM users WHERE username = %s', [attempted_username])
email_dict = cursor.fetchall()
print(email_dict)
session['email'] = email_dict[0]['email']

Console:

[{'email': '[email protected]'}]

Answer

Laurent LAPORTE picture Laurent LAPORTE · Oct 1, 2017

The result of fetchall is a list of tuples, not a list of dict.

Your query result have only one field: email at index 0.

You can rewrite your code like this:

rows = cursor.fetchall()
for row in rows:
    email = row[0]

Or, in your situation where there is only one result:

session['email'] = rows[0][0]

I think, you can also use:

row = cursor.one()