python - 使用循环将值保存在数组中

Question

我的程序运行完美；然后，它会给我一个错误，指出以下内容:

Traceback (most recent call last):
  File "K:\56_CRT\1 PST EEIC\2_Projects\InternetOfTests\Project_Jacob\Full 
  Program (Testing).py", line 228, in <module>
    inputSamplesm[idx] = [data[0], data[1]]
IndexError: list index out of range

我不知道那是什么。我一直在尝试操作数组和索引，但似乎无法解决问题。请指教。在下面找到我的代码:

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 {0}\n'.format(data[0]).encode('utf-8'))
        conn.write('VOLT {0}\n'.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)

Answer 1

根据 documentation csv 模块的 reader 函数仅接受一个文件描述符来读取内容。当您为函数传递两个文件描述符时，尽管解释器不会引发任何异常，但它会默默地忽略第二个文件并仅解析第一个文件。您可能需要通过一一解析来重新访问代码，并确保两个文件都非空。

演示

文件1.csv

name,age
swadhikar,29

文件2.csv

name,age
elavarasan,29

示例脚本

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)

结果

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

您可以使用 csv.reader() 创建两个单独的阅读器引用来解析这两个 csv 文件，并使用 zip 对其进行迭代，如下所示。

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)

结果

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