如何拒绝输入，直到在Python中需要？

Question

我从代码中摘录了问题仍然存在的地方。我相信这是由于我的slow_type函数引起的，但是在对话框“慢速键入”时，即使在输入出现之前，我的输入也将采用“ slow_type”期间键入的任何值。我希望输入只能在slow_type函数完成后才能输入。我该怎么办？

import time
import sys

def slow_type(line, speed):#You input the dialogue and speed(smaller = faster)
    for l in line:
        sys.stdout.write(l)
        sys.stdout.flush()
        time.sleep(speed)
    time.sleep(.5)

NL1 = "Huh, I see you finally came. "
NL2 = "You know I sent you that message a long time ago.\n"
NL3 = "But I guess you are here now, and that's what matters. "
NL4 = "So...\n"
NL5 = "\n\t\t\t\tAre you ready?\n\n"

slow_type(NL1, .05)
slow_type(NL2, .05)
slow_type(NL3, .05)
slow_type(NL4, .2)
slow_type(NL5, .05)

print("\t\t1:Yes, I am. 2:Who are you? 3:No, I am leaving.\n")
first_choice = input("\t\t\t\t    ").lower()

我正在使用Windows 10 cmd。