原始代码：

    1. file = open(r'C:\Users\pi\Desktop\2.txt')
    2. d = loadtxt(file, dtype=str)
    3. print(d[0])
    4. ["b'love'" "b'byte'" "b'you'"]
    6. file = open(r'C:\Users\pi\Desktop\2.txt', 'rb')
    7. d = loadtxt(file, dtype=str)
    8. print(d)
    9. ["b'love'" "b'byte'" "b'you'"]
    11. file = open(r'C:\Users\pi\Desktop\2.txt', 'r', encoding='utf-8')
    12. d = loadtxt(file, dtype=str)
    13. print(d)
    14. ["b'love'" "b'byte'" "b'you'"]

    输出的值前面总会在字符串前面加上“b”，原因是np.loadtxt and np.genfromtxt operate in byte mode, which is the default string type in Python 2. But Python 3 uses unicode, and marks bytestrings with this b. numpy.loadtxt中也声明了：Note that generators should return byte strings for Python 3k.

    如何去除这个“b”，只需使用下面这个代码：

    1. np.loadtxt(filename, dtype=bytes).astype(str)

    作者：Cameron
    链接：https://www.zhihu.com/question/28690341/answer/164344688
    来源：知乎
    著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。