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Saving values in an array using loops

My program was working perfectly; then, it would give me an error that states the following:

Traceback (most recent call last):
File "K:56_CRT1 PST EEIC2_ProjectsInternetOfTestsProject_JacobFull
Program (Testing).py", line 228, in <module>
inputSamplesm[idx] = [data[0], data[1]]
IndexError: list index out of range


I don't know what that is. I've been trying to manipulate the arrays and indices, but I seem to fail to solve the problem. Please advise. Find my code below:

with open('MagnaDC Set Points.csv', 'r') as csvfile1, open('Amatek Set Points.csv', 'r') as csvfile2:
dataset = csv.reader(csvfile1, csvfile2, delimiter=',')
next(dataset)
rows = list(dataset)
inputSamplesm = np.empty([len(rows), 2], dtype=float)
outputSamplesm = np.empty([1,3], dtype=float)
inputSamplesa = np.empty([len(rows), 2], dtype=float)
outputSamplesa = np.empty([1,3], dtype=float)
testStartTime = time.time()
for idx, data in enumerate(rows):
inputSamplesm[idx] = [data[0], data[1]]
inputSamplesa[idx] = [data[0], data[1]]
s.sendall('VOLT 0n'.format(data[0]).encode('utf-8'))
conn.write('VOLT 0n'.format(data[0]).encode('utf-8'))
stopTime = testStartTime + int(data[1])
while time.time() < stopTime:
s.sendall('MEAS:VOLT?n'.encode('utf-8'))
voltm = s.recv(1024)
voltm = float(voltm)


IndexError: list index out of range

inputSamplesm[idx]

data[0]

data[1]

inputSamplesm

data

reader

dataset = csv.reader(csvfile1, csvfile2, delimiter=',')

,

1 Answer
1

As per documentation csv module's reader function accepts only one file descriptor to read contents. When you pass two file descriptors for the function, though the interpreter does not raise any exceptions it silently ignores the second and parses only the first file. You may need to revisit code by parsing one by one and also make sure that both files are non-empty.

csv

reader

Demonstration

file1.csv

name,age
swadhikar,29


file2.csv

name,age
elavarasan,29


sample script

import csv


with open('file2.csv') as f1, open('file1.csv') as f2:
reader_obj = csv.reader(f1, f2, delimiter=',')
next(reader_obj)
for line in reader_obj:
print(line)


Result

/usr/bin/python3.6 /home/swadhi/PycharmProjects/pyselenium/python/stackoverflow/so_51741056.py
['elavarasan', '29']


You may parse the two csv files with two separate reader references created using csv.reader() and zip them to iterate through them as below.

csv.reader()

zip

import csv


with open('file1.csv') as f1, open('file2.csv') as f2:
f1_reader_obj = csv.reader(f1)
f2_reader_obj = csv.reader(f2)

next(f1_reader_obj)
next(f2_reader_obj)

for file1_line, file2_line in zip(f1_reader_obj, f2_reader_obj):
line1_as_str = ' '.join(file1_line)
line2_as_str = ' '.join(file2_line)
print(line1_as_str)
print(line2_as_str)


Result

/usr/bin/python3.6 /home/swadhi/PycharmProjects/pyselenium/python/stackoverflow/so_51741056.py
swadhikar 29
elavarasan 29


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