Python通过不带括号字符的文件导出到文件

Question

我成功地简化了从光谱仪导入数据的python模块 （我完全是个初学者，别人为我写了代码的模型……）

我只有一个问题：一半的输出数据（在.csv文件中）被方括号包围：[]

我希望文件包含如下结构：

name, wavelength, measurement

即

a,400,0.34
a,410,0.65
...

但我得到的是：

a,400,[0.34]
a,410,[0.65]
...

有什么简单的解决办法吗？你知道吗

是因为measurement是string？你知道吗

谢谢

import serial  # requires pyserial library

ser  = serial.Serial(0)
ofile = file( 'spectral_data.csv', 'ab')

while True:
    name = raw_input("Pigment name [Q to finish]: ")
    if name == "Q":
        print "bye bye!"
        ofile.close()
        break

    first = True

    while True:
        line = ser.readline()
        if first:
            print "  Data incoming..."
            first = False
        split = line.split()
        if 10 <= len(split):
            try:
                wavelength = int(split[0])
                measurement = [float(split[i]) for i in [6]]
                ofile.write(str(name) + "," + str(wavelength) + "," + str(measurement) + '\n')

            except ValueError:
                pass    # handles the table heading
        if line[:3] == "110":
            break

    print "  Data gathered."
    ofile.write('\n')

Answer 1

请执行以下操作：

measurement = [float(split[i]) for i in [6]]
ofile.write(str(name) + "," + str(wavelength) + "," + ",".join(measurement) + '\n')

或

ofile.write(str(name) + "," + str(wavelength) + "," + split[6] + '\n')