Python：如果输入是在一个写文件中，则不起作用

这是我正在写的一个程序。目的是要有一个输入和程序检查，看看输入是否在文件中。然而，我不知道如何去做这件事。这就是我目前所拥有的

def writefile():
    myfile = open("problems.txt", "w")
    myfile.write("display blank smashed cracked")
    myfile.write("display")
    myfile.write("blank")
    myfile.write("smashed")
    myfile.write("cracked")

    myfile.close()

writefile()

print("=======This is a mobile phone troubleshooting assistant system.=======")

def readfile():
    print("This is where we will establish your issue.")
    input1 = input("What is your problem?")
    myfile = open("problems.txt")
    list1=myfile.readlines()
    if input1 in list1:
        print("ISSUE FOUND")

readfile()

---

您必须使用原始输入而不是输入，还要检查每一行（列表1中的行）

def writefile():
    myfile = open("problems.txt", "w")
    myfile.write("display blank smashed cracked")
    myfile.write("display")
    myfile.write("blank")
    myfile.write("smashed")
    myfile.write("cracked")

    myfile.close()

writefile()

print("=======This is a mobile phone troubleshooting assistant system.=======")

def readfile():
    print("This is where we will establish your issue.")
    input1 = raw_input("What is your problem?")
    myfile = open("problems.txt")
    list1=myfile.readlines()
    for line in list1:
        if input1 in line:
            print("ISSUE FOUND")

readfile()