如何忽略用户输入中的某些字符串？答案

【问题标题】：How to ignore certain strings from user input?如何忽略用户输入中的某些字符串？
【发布时间】：2021-11-09 05:49:10
【问题描述】：

初学者问题：

如何让我的输入代码忽略某些文本字符串？

你叫什么人类？ 我是弗雷德

你多大了我叫 Fred？

如何忽略用户输入的“我”一词？

你几岁了，我叫 Fred？我今年 25 岁

啊，弗雷德，我 25 岁 没那么老。

在处理整数时如何再次忽略用户输入？

这是我目前的代码：

name = input("What is your name human? ")

while True:
        try:
                age = int(float(input("How old are you " + name + "? ")))

                if age >= 50:
                        print(str(age) + "! Wow " + name + ", you're older than most of the oldest computers!")
                else:
                        print ("Ahh, " + name + ", " + str(age) + " isn't that old.")
                break
        except ValueError:
                print("No, I asked how old you were... ")
                print("Let us try again.")

【问题讨论】：

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标签： python string input

【解决方案1】：

您可以使用.replace('replace what','replace with') 来实现这一目标。在这种情况下，您可以使用以下内容：

name = input("What is your name human? ").replace("I'm ","").title()

while True:
    try:
        age = int(input("How old are you " + name + "? ").replace("I'm ",""))

        if age >= 50:
            print(str(age) + "! Wow " + name + ", you're older than most of the oldest computers!")
        else:
            print ("Ahh, " + name + ", " + str(age) + " isn't that old.")
        break
    except ValueError:
            print("No, I asked how old you were... ")
            print("Let us try again.")

同样，您可以使用您认为用户可能输入的词，这是一种方法。

【讨论】：

【解决方案2】：

为什么不使用应该从输入中忽略或删除的单词列表，我建议您使用以下解决方案。

toIgnore = ["I'm ", "my name is ", "i am ", "you can call me "]
name = input("What is your name human? ")

for word in toIgnore:
    name = name.replace(word, "")

while True:
    try:
        age = int(float(input("How old are you " + name + "? ")))

        if age >= 50:
            print(str(age) + "! Wow " + name + ", you're older than most of the oldest computers!")
        else:
            print ("Ahh, " + name + ", " + str(age) + " isn't that old.")
            break
    except ValueError:
        print("No, I asked how old you were... ")
        print("Let us try again.")

输出如下

【讨论】：