Python 3.x：sys.stdin.readlines（）上的''.join（）輸入在最終字符不是換行/換行符時不返回最終字符串

Question

我想轉換成文本塊，無論是單行或多行，到一個單一的字符串一個剩余空格" "結尾。

這是我的代碼：

# Take a block of text as input.
print("Input Your Sentence(s) Below (and Then Hit CTRL+D):")
samp_sent = sys.stdin.readlines()

samp_sent = ' '.join(samp_sent)
samp_sent = samp_sent.replace("\n", " ")
print(samp_sent)

如果最后一個字符不是換行符，則它會省略字符串並僅添加" " 。

示例（輸入→輸出）：

1. "Here is one line. \\n Here is another line. \\n" → "Here is one line. Here is another line. "

2. "Here is one line. \\n Here is another line." → "Here is one line. "

3. "Here is one line." → " "

無論我輸入示例（1），（2）還是（3）作為輸入，如何確保最后一行始終出現在print(samp_sent) ？

Answer 1

如果一行的開頭或結尾不需要空格，則可以執行以下操作：

samp_sent = ' '.join(line.strip() for line in samp_sent)

代替

samp_sent = ' '.join(samp_sent)
samp_sent = samp_sent.replace("\n", " ")

另一種選擇：

print("Input Your Sentence(s) Below (and Then Hit CTRL+D):")
samp_sent = ' '.join(sys.stdin.read().splitlines())
print(samp_sent)