python - Insert invisible unicode into MySQL using python3 but encountered duplicate -

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when insert device data mysql(v5.5.6) using python(v3.2). encountered problem.

this device (it contains 3 unicode , blank space): '\u202d\u202d \u202d'

and device b (it blank space): ' '

the problem when insert device data mysql , error

duplicate entry 'activate_device-20151201-1-5740-01000p---‭‭ ‭--' key 'primary'

i guess mysql has deal '\u202d'(a unicode reverse string maybe?).

how can simulate process in python3 mysql? how can avoid duplicate?

the expected result translate '\u202d\u202d \u202d' ' ' in python3.

please me.

there ambiguities here. want keep visible ascii characters or visible unicode characters ?

if want keep visible ascii characters, simple way use python inbuilt string module.

import string new_string = "".join(filter(lambda x:x in string.printable, original_string))

for specific usecase, space part of visible ascii - above convert '\u202d\u202d \u202d' , ' ' ' '


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