ModuleNotFoundError: No module named 'MySQLdb'

Question

After finishing of one of my Flask projects, I uploaded it on github just like everybody else. after a 2-3 months period I downloaded the entire githube repository on anothe

Answer 1

To install MySQLdb, provided pip or pip3 is installed on your machine:

pip install mysqlclient

Answer 2

I have read that mysqldb is not supported by python3

And it looks like when you are trying to connect to your database you are using mysql db to connect to the database by default!

you need to change it by editing your DATABASE_URI configuration

But before you need to install the connector extension :

with this command :

pip install mysql-connector-python

And according to this documentation you can edit your DATABASE_URI and change the default connector like this :

DATABSE_URI='mysql+mysqlconnector://{user}:{password}@{server}/{database}'.format(user='your_user', password='password', server='localhost', database='dname')

I hope this will help...

Answer 3

I have the same problem like you. Here is my solution:

Reason: python3.X does not support MySQLdb,so you need to change to pymysql model

Solution: Change the content of import.

1):

replace all MySQLdb with pymysql

2):

def reconnect(self):
    """Closes the existing database connection and re-opens it."""
    self.close()
    self._db = pymysql.connect(**self._db_args)# MySQLdb.connect(**self._db_args)
    self._db.autocommit(True)

3)

if pymysql is not None:
    # Fix the access conversions to properly recognize unicode/binary
    FIELD_TYPE = pymysql.connections.FIELD_TYPE # MySQLdb.constants.FIELD_TYPE
    FLAG = pymysql.constants.FLAG# MySQLdb.constants.FLAG
    CONVERSIONS = copy.copy (pymysql.converters.conversions)# (MySQLdb.converters.conversions)

    field_types = [FIELD_TYPE.BLOB, FIELD_TYPE.STRING, FIELD_TYPE.VAR_STRING]
    if 'VARCHAR' in vars(FIELD_TYPE):
        field_types.append(FIELD_TYPE.VARCHAR)

    for field_type in field_types:
        # CONVERSIONS[field_type] = [(FLAG.BINARY, str)] + CONVERSIONS[field_type]
        CONVERSIONS[field_type] = [(FLAG.BINARY, str)].append(CONVERSIONS[field_type])

    # Alias some common MySQL exceptions
    IntegrityError = pymysql.IntegrityError# MySQLdb.IntegrityError
    OperationalError = pymysql.OperationalError# MySQLdb.OperationalError

4):

def __init__(self, host, database, user=None, password=None,
                 max_idle_time=7 * 3600, connect_timeout=10,# 设置连接超时时间，时间是秒
                 time_zone="+0:00", charset = "utf8", sql_mode="TRADITIONAL"):

5):

def query(self, query, *parameters, **kwparameters):
    """Returns a row list for the given query and parameters."""
    cursor = self._cursor()
    try:
        self._execute(cursor, query, parameters, kwparameters)
        column_names = [d[0] for d in cursor.description]
        return [Row(itertools.zip_longest(column_names, row)) for row in cursor]
    finally:
        cursor.close()

Answer 4

import pymysql
pymysql.install_as_MySQLdb()

Answer 5

You can install mysqlclient with pip

If using Python3, try this:

pip3 install mysqlclient

or in Python2

pip install mysqlclient