如何将每行的第一个单词读入文件中的一行

Question

with open("my_file.txt", "r") as f:
next(f)                         # used to skip the first line in the file
for line in f:
words = line.split()        
if words:
print(words[0])          

将输出:

a-1,
b-2,
c-3,

我想让它从文件中输出/读取这个:

a-1, b-2, c-3,

Answer 1

将单词保存到列表中，然后用空格连接:

with open("my_file.txt", "r") as f:
first_words = []
next(f)
for line in f:
words = line.split()
if words:
first_words.append(words[0])

print(' '.join(first_words))

输出:

a-1, b-2, c-3,