Python save string to postgres from bytea

Question

i'm a pythonic user. right now, i'm in trouble with restoring "string" into postgres. here's part of my code:

dataRecv = '3231334744323031363030313831340000000000'
device_id = bytearray.fromhex(dataRecv[0:(len(dataRecv)-10)]).decode()

and i got:

device_id = '213GD2016001813'

just like what i want.

but then i want to save it to postgresql with pyscopg2:

execute("INSERT INTO table (column) VALUES (device_id)")
commit()

which the "column" data type is char(20). The Error i got is here:

syntax error at or near "GD2016001813"
213GD20160018...
   ^

i already tried with casting string to the device_id with str(device_id) and also add apostrophe (') in the beginning and the end of device id so it will be like this: VALUES ('device_id') . but the result still the same, wether it will be error from this part:

213GD20160018...
   ^

or this part:

213GD20160018...
^

can you guys help me? thankyou

Answer 1

1）转换为字符串https://www.postgresql.org/docs/9.3/static/functions-formatting.html 2）检查列的格式也许只需要数字