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# Python | Ways to convert an array of strings to a floating point array

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Method # 1: Using Astype

 ` # Python code to demonstrate conversion ` ` # array of strings to array of floats ` ` # using astype `   ` import ` ` numpy as np `   ` # initializing array ` ` ini_array ` ` = ` ` np.array ([` ` "1.1" ` `, ` `" 1.5 "` `, ` `" 2.7 "` `, ` ` "8.9" ` `]) `   ` # printing the original array ` ` print ` ` (` ` "initial array" ` `, ` ` str ` ` ( ini_array)) `   ` # connect to floating point array ` ` # using np.astype ` ` res ` ` = ` ` ini_array.astype (np. ` ` float ` `) `   ` # print the final result ` ` print ` ` (` `" final array "` `, ` ` str ` ` (res)) `

Exit:

` initial array [’1.1’’ 1.5’ ’2.7’’ 8.9’] final array [1.1 1.5 2.7 8.9] `

Method # 2: Using `np.fromstring`

` `

` # Python code to demonstrate conversion # array of strings to array of floats # using fromstring   import numpy as np   # initializing array ini_array = np.array ([ " 1.1 " , "1.5" , "2.7" , " 8.9 " ])    # print the original array print ( "initial array" , str (ini_array))   # connect to floating point array # using np.fromstring ini_array = ’,’ . join (ini_array) ini_array = np.fromstring (ini_array, dtype = np. float ,  sep = ’,’ )   # print the final result print ( "final array" , str ( ini_array)) `

` ` Exit:

` initial array [’1.1’’ 1.5’’ 2.7’’ 8.9’] final array [1.1 1.5 2.7 8.9] `

Method # 3: Using ` np.asarray () ` and type

 ` # Python code for demonstration ` ` # converting an array of strings to a floating point array ` ` # using asarray `   ` import ` ` numpy as np `   ` # initializing array ` ` ini_array ` ` = ` ` np.array ( [` ` "1.1" ` `, ` ` "1.5" ` `, ` ` "2.7" ` `, ` ` "8.9" ` `]) `   ` # print the original array ` ` print ` ` (` ` " initial array "` `, ` ` str ` ` (ini_array)) `   ` # connecting to a floating point array ` ` # using np.asarray ` ` final_array ` ` = ` ` b ` ` = ` ` np.asarray (ini_array, ` ` ` ` dtype ` ` = ` ` np.float64, order ` ` = ` ` ’C’ ` `) ` ` `  ` # print the final result ` ` print ` ` (` ` "final array" ` `, ` ` str ` ` (final_array)) `

Exit:

` initial array [’1.1’’ 1.5’ ’2.7’’ 8.9’] final array [1.1 1.5 2.7 8.9] `

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