如何創建一個包含文件中每一行的第一個單詞的列表（Python 3）

Question

該文件稱為“ emotion_words”，我希望將其作為每行的第一個單詞。 我想使用嵌套的for循環，但不確定如何。 我會這樣做嗎

emotions=open("emotion_words.txt","r+")
content = emotions.read()
for line in content.split(' ',1):

並在第二個for循環之前添加一個append函數？

Answer 1

with open("emotion_words.txt","r+") as f:
    for line in f:
        first_word_in_line = line.split(" ")[0]

Answer 2

fileref = open ("emotion_words.txt","r")
line = fileref.readlines()
emotions = []
for words in line:
    word = words.split()
    emotions.append(word[0])
print (emotions)

Answer 3

如果我理解您的問題正確無誤，那么這應該對您有用：

words = []
emotions = open("emotion_words.txt", "r+")
for l in emotions:
    first_word = l.split()[0]
    words.append(first_word)

之后，將您的單詞放入“單詞”列表中。