array storing in file by python

Solutions on MaxInterview for array storing in file by python by the best coders in the world

showing results for - "array storing in file by python"
Till
26 Oct 2019
1# long arrays can be stored in csv files far more efficiently
2import numpy as np
3import csv
4
5# uploading arrays in a csv file
6arr1 = [i for i in range(500)]
7arr2 = [i for i in range(1000)]
8arr3 = [i for i in range(2000)]
9# you can write('w') or append('a')
10with open('record.csv', 'a') as record_append:
11    np.savetxt(record_append, np.asarray([arr1]), delimiter=',')
12    np.savetxt(record_append, np.asarray([arr2]), delimiter=',')
13    np.savetxt(record_append, np.asarray([arr3]), delimiter=',')
14
15# downloading them from the csv file
16two_dim_arr = []  # each line of the file is an array element
17with open('record.csv', 'r') as record_read:
18    reader = csv.reader(record_read)
19    for i, each_arr in enumerate(reader):
20        two_dim_arr.append([eval(each) for each in each_arr])
21        
22# printing the arrays in lines
23for each_line in two_dim_arr:
24  print(each_line)
queries leading to this page
read and write in array in file pythonpython store array in filesaving arrays in file txt pythonhow to read a list of numbers in a text file and input it into a list in pythonstore file in array pythonread csv file and create arraysread all file and store in an array using pythonhow to convert augmented data into csv file using pythonpython script that reads from a listwrite numpy array in file how to save an array as csv file in pythonwrite array of string to file pythonwrite list text file pythonpython write and read array to filepython array to csv filepython save list content securelypythonwrite array to filehow to read list in filehow to store an array in a file in pythonwrite all in array to file pythonread csv file and create arrays pythonstore array in file and read pythonpython write and read array from filehow to store list information in a file pythonreading a list with for in pythonpython read list fileread and write text file to list pythonstoring values from a file as a string in a list pyhtonwrite and read list to file pythonarray list python with data in filehow to store the line information as list in pythonwhy the output of a csv is an array in pythontwo list save in db in pythonpython script to get data and save it as a listhow do you read a file and store it to an array in pythonhow to read a list from file in pythonstore the list in text file in pythonformat like a list when writing to text file pythonpython read and write array to filenumpy array save in filepython write array of strings to filearray storing in file by pythonstore numpy array in filesave array information in a file pythonarray storing in file by python