python - 导入词汇表

Question

我正在麻省理工学院的开放课件上学习 CS/Python。他们要我设计一个刽子手游戏，并给了我一些初步代码，用于导入单词列表并从中生成随机单词。此代码本身会返回一个错误:“不能有无缓冲的文本 I/O。”这是代码:

import random
import string

WORDLIST_FILENAME = "words.txt"

def load_words():
     print("Loading word list from file...")
     # inFile: file
     inFile = open(WORDLIST_FILENAME, 'r', 0)
     # line: string
     line = inFile.readline()
     # wordlist: list of strings
     wordlist = string.split(line)
     print("  ", len(wordlist), "words loaded.")
     return wordlist

def choose_word(wordlist):
     return random.choice(wordlist)

MIT类(class)没有使用Python 3.0，我用的是Python 3.0，所以可能那里有问题；如您所见，为了与 Python 3.0 兼容，我已经将“print”从声明更新为函数。

Answer 1

抛出这个错误是因为你试图在关闭缓冲(第三个参数设置为 0)的情况下读取一个文本文件:

inFile = open(WORDLIST_FILENAME, 'r', 0)

将上面的行替换为

inFile = open(WORDLIST_FILENAME, 'r')

它应该可以工作。

来自 python 文档:

buffering is an optional integer used to set the buffering policy. Pass 0 to switch buffering off (only allowed in binary mode), 1 to select line buffering (only usable in text mode), and an integer > 1 to indicate the size of a fixed-size chunk buffer.