mysql float64_'numpy.float64'对象没有属性'translate'在Python中插入值到Mysql
import dataset
db = dataset.connect(....)
table = db[...]
样本值，我插入到表：
print("Buy", ticker, price, date, OType, OSize)
Buy AAPL 93.4357142857 2016-05-12 Market 200
data = dict(Order_Side='Buy',Ticker=ticker, Price=price,
Order_Date= date, Order_Type = OType, Volume = OSize)
table.insert(data)
错误消息：
Traceback (most recent call last):
File "", line 1, in
runfile('C:/Users/SwigelUser/Documents/GitHub/Trading/Strategies/strat_MA_ExecTest.py', wdir='C:/Users/SwigelUser/Documents/GitHub/Trading/Strategies')
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 880, in runfile
execfile(filename, namespace)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)
File "C:/Users/SwigelUser/Documents/GitHub/Trading/Strategies/strat_MA_ExecTest.py", line 69, in
MA_Stra(start_length=7,end_length=10,start_date=date(2016,5,12),end_date=date(2016,6,18))
File "C:/Users/SwigelUser/Documents/GitHub/Trading/Strategies/strat_MA_ExecTest.py", line 66, in MA_Stra
table.insert(data1)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\dataset\persistence\table.py", line 87, in insert
res = self.database.executable.execute(self.table.insert(row))
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 945, in execute
return meth(self, multiparams, params)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\sql\elements.py", line 263, in _execute_on_connection
return connection._execute_clauseelement(self, multiparams, params)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 1053, in _execute_clauseelement
compiled_sql, distilled_params
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 1189, in _execute_context
context)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 1405, in _handle_dbapi_exception
util.reraise(*exc_info)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\util\compat.py", line 187, in reraise
raise value
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 1182, in _execute_context
context)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\sqlalchemy\engine\default.py", line 470, in do_execute
cursor.execute(statement, parameters)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\cursors.py", line 164, in execute
query = self.mogrify(query, args)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\cursors.py", line 143, in mogrify
query = query % self._escape_args(args, conn)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\cursors.py", line 123, in _escape_args
return dict((key, conn.literal(val)) for (key, val) in args.items())
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\cursors.py", line 123, in
return dict((key, conn.literal(val)) for (key, val) in args.items())
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\connections.py", line 821, in literal
return self.escape(obj, self.encoders)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\connections.py", line 814, in escape
return escape_item(obj, self.charset, mapping=mapping)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\converters.py", line 27, in escape_item
val = encoder(val, mapping)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\converters.py", line 110, in escape_unicode
return u"'%s'" % _escape_unicode(value)
File "C:\Users\SwigelUser\Anaconda3\lib\site-packages\pymysql\converters.py", line 73, in _escape_unicode
return value.translate(_escape_table)
AttributeError: 'numpy.float64' object has no attribute 'translate'
什么造成这个错误？我怎么能解决这个问题。 这似乎是我在这里输入了太多的代码，因此我必须输入很多无意义的代码才能提交。
我的价格和日期变量来自于一个数据帧：
for i in range(len(All_Tickers)-1-len(Current_Date),len(All_Tickers)-1):
price = All_Tickers[str(length) + 'day_MA'][i]
date = All_Tickers['Date'][i+1]
根据下面的答案，这个问题应该是价格的类型是np.float64，我怎么能转换这个变量为float类型？
2017-09-13
Dylan
+0
因为事实证明你正在做的事情涉及到熊猫，['to_sql()'](https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.to_sql.html)方法可能会让你感兴趣 –