python - 如何仅使用数字键盘键制作字母键盘

Question

我正在尝试制作键盘，但我只想使用小键盘和那里的按钮使其工作，但是我的代码似乎不适用于 a 和 b 部分。我评论了哪一部分。

if "1" in line:
    if kytype == 'a':
        kytype = "k"
    elif kytype == 'b': #when this part is runned it prints a 'b' instead
        kytype == "u"   # of a 'u'
    elif kytype == " ":
        kytype = "a"
elif "2" in line:
    if kytype == 'a':
            kytype = "l"
    elif kytype == 'b':
            kytype == "v" #it happens here too and instead of printing a
    elif kytype == " ":   # 'v' it prints a 'b'
            kytype = "b"
#I haven't done the rest of the code for other letters because of the
#problem
elif line = 'ins':
    print(kytype)
    kytype = " "