python - 我如何修复这个 "ValueError: can' t have unbuffered text I/O"in python 3？

Question

这是麻省理工学院的python项目问题之一，但它基本上是为python 2.x用户编写的，那么有什么办法可以修复以下代码以在最新的python 3中运行？

当前代码引发“ValueError: can't have unbuffered text I/O”

WORDLIST_FILENAME = "words.txt"

def load_words():

    print("Loading word list from file...")

    inFile = open(WORDLIST_FILENAME, 'r', 0)
    # wordlist: list of strings
    wordlist = []
    for line in inFile:
        wordlist.append(line.strip().lower())
    print("  ", len(wordlist), "words loaded.")
    return wordlist

Answer 1

来自 open 的文档字符串:

... buffering is an optional integer used to set the buffering policy. Pass 0 to switch buffering off (only allowed in binary mode) ...

所以改变 inFile = open(WORDLIST_FILENAME, 'r', 0)

到

inFile = open(WORDLIST_FILENAME, 'r')，或到

inFile = open(WORDLIST_FILENAME, 'rb', 0) 如果您真的需要它(我对此表示怀疑)。