同时读取几个.csv文件[重复]

Posted 2021-04-02

这个问题在这里已有答案：

• Reading two text files line by line simultaneously 3回答

我试图通过两个不同的.csv文件循环读取值。打开一个.csv文件时，我能够完美地运行程序;但是，当我导入第二个.csv文件时，我收到如下错误：

---

回溯（最近一次调用最后一次）：文件“C： Users crteeic Desktop Project Full Program（Testing）.py”，第210行，打开（'MagnaDC Set Points.csv'，'r'）和（'Amatek Set Points.csv'，'r'）为csvfile：

AttributeError：输入

该程序的目的是从两个.csv文件中读取值，并将这些值发送到两个不同的电源。请找到以下代码：

with open('MagnaDC Set Points.csv', 'r') and ('Amatek Set Points.csv', 'r') as csvfile:
    dataset = csv.reader(csvfile, 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}
'.format(data[0]).encode('utf-8'))
        conn.write('VOLT {0}
'.format(data[0]).encode('utf-8'))
        stopTime = testStartTime + int(data[1])

请指教。谢谢。

答案

您需要单独打开文件：

with open('MagnaDC Set Points.csv', 'r') as csvfile1, open('Amatek Set Points.csv', 'r') as csvfile2: 

更多信息：Read two textfile line by line simultaneously -python

另一答案

如果您只想连续读取这两个文件并发送它们，请循环遍历文件名：

filenames = [
  "MagnaDC Set Points.csv",
  "Amatek Set Points.csv",
]
for filename in filenames:
    with open(filename, "r") as csvfile:
        dataset = csv.reader(csvfile, 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}
".format(data[0]).encode("utf-8"))
            conn.write("VOLT {0}
".format(data[0]).encode("utf-8"))
            stopTime = testStartTime + int(data[1])