Python - 仅对某些字符串计算字符串的长度不准确

Question

我是编程新手，正在尝试制作一个基本的刽子手游戏。出于某种原因，在从文本文件计算字符串长度时，某些单词的字符串长度计算不正确。有些字符串的值太高，有些太低。我似乎无法弄清楚为什么。我已经确保文本文件中没有空格，以便将空格计为一个字符。

import random

#chooses word from textfile for hangman
def choose_word():
    words = []
    with open("words.txt", "r") as file:
        words = file.readlines()

        #number of words in text file
        num_words = sum(1 for line in open("words.txt"))
        n = random.randint(1, num_words)

        #chooses the selected word from the text file
        chosen_word = (words[n-1])
        print(chosen_word)

        #calculates the length of the word
        len_word = len(chosen_word)
        print(len_word)

choose_word()
#obama returns 5
#snake, turtle, hoodie, all return 7
#intentions returns 11
#racecar returns 8

words.txt

snake
racecar
turtle
cowboy
intentions
hoodie
obama

Answer 1

使用 strip() .

string.strip(s[, chars])

Return a copy of the string with leading and trailing characters removed. If chars is omitted or None, whitespace characters are removed. If given and not None, chars must be a string; the characters in the string will be stripped from the both ends of the string this method is called on.

例子:

>>> ' Hello'.strip()
'Hello'

尝试这个:

import random

#chooses word from textfile for hangman
def choose_word():
    words = []
    with open("words.txt", "r") as file:
        words = file.readlines()

        #number of words in text file
        num_words = sum(1 for line in open("words.txt"))
        n = random.randint(1, num_words)

        #chooses the selected word from the text file
        chosen_word = (words[n-1].strip())
        print(chosen_word)

        #calculates the length of the word
        len_word = len(chosen_word)
        print(len_word)

choose_word()