如何在Python 3中获取多行的用户输入？

Question

完全是新手，想弄清楚这一点。我知道常规输入函数可以接受 单行，但只要您尝试编写一个字符串段落并按回车键进入下一行，它就会终止。有没有一种初学者友好的方法来接受多行用户字符串输入作为变量？谢谢！

Answer 1

在程序中这样做的一种常见方法是有一个“I'm done”字符串（例如，一个句点），并保持逐行读取，直到读取的行与该字符串匹配为止。

print("Enter as many lines of text as you want.")
print("When you're done, enter a single period on a line by itself.")

buffer = []
while True:
    print("> ", end="")
    line = input()
    if line == ".":
        break
    buffer.append(line)
multiline_string = "\n".join(buffer)

print("You entered...")
print()
print(multiline_string)

Answer 2

你可以使用sys库

import sys
x = sys.stdin.read()

Answer 3

def processString(x):
    print(x.replace('process','whatever'))

lines = ""
while True:
    if lines == "":
        lines = ""
        print("Enter string:")
    x = input()
    if x == "" and lines != "":
        processString(lines)
        break
    else:
        lines += x

# then hit enter once after multi-line string to process it