Q:

Unable to convert String to numpy 1d array

For facial recognition, we need to read vector from mysql DB and convert to 1D array for recognition.
The following object is retrieved from mysql which is stored as JSON format in mysql.
s1= [-0.12783311307430267, 0.13190957903862, 0.09596485644578934, -0.09712248295545578, -0.11780811846256256, 0.007217485923320055, -0.11222986876964568, -0.04876283556222915, 0.2216355949640274, -0.10998672991991044, 0.18791022896766665, 0.08736929297447205, -0.16356715559959412, -0.01818229630589485, -0.021847818046808243, 0.13041044771671295, -0.13738003373146057, -0.09671961516141891, -0.02172057516872883, -0.14230197668075562, 0.05242226645350456, 0.09029272198677064, -0.002328673377633095, 0.00397188076749444, -0.20264719426631927, -0.2703503370285034, -0.12626759707927704, -0.07806601375341415, 0.1267593950033188, -0.13493752479553223, -0.043157391250133514, -0.016596168279647827, -0.16287413239479065, -0.0656481683254242, 0.03958671912550926, 0.07427462935447693, -0.06913568824529648, -0.0629347711801529, 0.178871750831604, 0.08766687661409378, -0.09091204404830933, 0.011706589721143246, 0.04953945055603981, 0.27260822057724, 0.16323423385620117, 0.0253637433052063, 0.10930740833282472, -0.11138659715652466, 0.12710365653038025, -0.21879185736179352, 0.08703845739364624, 0.1319100558757782, 0.034353598952293396, 0.10928373038768768, 0.12201938033103944, -0.17505870759487152, 0.014886455610394478, 0.09721830487251282, -0.1538517326116562, 0.1672624796628952, 0.10802490264177322, -0.0300880316644907, -0.10113763064146042, -0.006332905497401953, 0.2025756984949112, 0.09179922193288804, -0.113119974732399, -0.20894797146320343, 0.15196490287780762, -0.12537285685539246, -0.05446625128388405, 0.11561021953821182, -0.11292491853237152, -0.11957288533449172, -0.2860523462295532, 0.08072254806756973, 0.4256277084350586, 0.15420164167881012, -0.11120182275772096, 0.0442705899477005, -0.06239746138453483, -0.043058544397354126, 0.03340786322951317, 0.06541167199611664, -0.12657742202281952, 0.017120834439992905, -0.03134886175394058, 0.10211298614740372, 0.20427383482456207, 0.03959937393665314, -0.01935926266014576, 0.2007918357849121, 0.051548801362514496, 0.08825849741697311, 0.016137562692165375, 0.1055104285478592, -0.15693385899066925, -0.07759833335876465, -0.0738161951303482, -0.05325906723737717, 0.08928476274013519, -0.09207655489444733, 0.035900089889764786, 0.17390793561935425, -0.17486083507537842, 0.20116952061653137, -0.03213610127568245, -0.03827217221260071, -0.05482873693108559, 0.07908175885677338, -0.14436912536621094, -0.010803371667861938, 0.1578456461429596, -0.2274101823568344, 0.18742960691452024, 0.2068897932767868, 0.04828779026865959, 0.08840855956077576, 0.11564983427524568, 0.051258377730846405, 0.0017237504944205284, 0.01801629178225994, -0.0783238410949707, -0.07523202151060104, -0.05354651063680649, -0.06916598975658417, 0.04159272089600563, 0.03667797893285751]

b = str(s1)

as1=np.fromstring(b, dtype=np.uint8, count=-1,sep=',')

print '-output--',as1

np.reshape(as1, (-1,1)

it is returning array([], dtype=uint8)
It tried all the below options but could not get it
Convert string to numpy array
Convert string array to numpy array

A:

Try this

b = str(s1) # converting to string as your input is string
output = np.fromstring(b[1:-1],sep=',') # using b[1:-1] to get the string alone by slicing square braces ([])
print(output)

check the doc for more info

