pip로 패키지 설치시 아래와 같이 UnicodeDecodeError가 발생하며 설치가 정상적으로 되지 않습니다.

UnicodeDecodeError: 'ascii' codec can't decode byte 0xc0 in position 7: ordinal not in range(128)

이럴때는 .py 파일을 수정해주면 됩니다.

1. \lib\site.py의 setencoding()함수

encoding = "ascii"를 아래와 같이 encoding = "utf-8"로 변경

def setencoding():
    """Set the string encoding used by the Unicode implementation.  The
    default is 'ascii', but if you're willing to experiment, you can
    change this."""
    encoding = "utf-8" # Default value set by _PyUnicode_Init()
    if 0:
        # Enable to support locale aware default string encodings.
        import locale
        loc = locale.getdefaultlocale()
        if loc[1]:
            encoding = loc[1]
    if 0:
        # Enable to switch off string to Unicode coercion and implicit
        # Unicode to string conversion.
        encoding = "undefined"
    if encoding != "ascii":
        # On Non-Unicode builds this will raise an AttributeError...
        sys.setdefaultencoding(encoding) # Needs Python Unicode build !

1. \lib\npath.py의 join(path, *paths)함수

result_path = result_path + p_path를 result_path = result_path + p_path.encode('utf-8')로 변경

def join(path, *paths):
    """Join two or more pathname components, inserting "\\" as needed."""
    result_drive, result_path = splitdrive(path)
    for p in paths:
        p_drive, p_path = splitdrive(p)
        if p_path and p_path[0] in '\\/':
            # Second path is absolute
            if p_drive or not result_drive:
                result_drive = p_drive
            result_path = p_path
            continue
        elif p_drive and p_drive != result_drive:
            if p_drive.lower() != result_drive.lower():
                # Different drives => ignore the first path entirely
                result_drive = p_drive
                result_path = p_path
                continue
            # Same drive in different case
            result_drive = p_drive
        # Second path is relative to the first
        if result_path and result_path[-1] not in '\\/':
            result_path = result_path + '\\'
        result_path = result_path + p_path.encode('utf-8')
    ## add separator between UNC and non-absolute path
    if (result_path and result_path[0] not in '\\/' and
        result_drive and result_drive[-1:] != ':'):
        return result_drive + sep + result_path
    return result_drive + result_path