nesting inaide a elif statement-CodePudding

I'm new on python. I'm learning it from internet. As we know in the case of short hand if-else we can change a multiline code into just a single line code and it's really awesome! but i can't understand how to do it in case of nesting inside elif statement? either it's possible or not? if yes, then how? and does it make sense to nest inside a elif statement? here's the code i want to convert into a single line code-

m = ["b", "c"]
a = input()
if a=="a":
    x = "a"
elif a in m:
    if a=="b":
        x = "b"
    else:
        x = "c"
else:
    x = "unknown"
print(x)

please help me : (

CodePudding user response：

elif and else: done by nesting a conditional expression into the else clause of the main conditional.

You should add lots of parentheses to ensure that the grouping of the conditionals is clear.

x = "a" if a == "a" else (("b" if a == "b" else "c") if a in m else "unknown")

I don't recommend writing like this, as it's hard to read.

CodePudding user response：

x = "a" if a == "a" else "b" if a == "b" else "c" if a == "c" else "unknown"

As mentioned earlier, this kind of expression is bad practice. It is not readable there's simpler ways.

CodePudding user response：

I'm sure your trivial solution glosses over much more complicated steps, but I wanted to point out an alternate way I often try to use to accomplish setting a value based on multiple potential conditions.

I recommend taking a look at how a dictionary might be used...

lookup = {
    "a": "A",
    "b": "B",
    "c": "C"
}

user_input = input("enter a single lowercase letter: ")
x = lookup.get(user_input, "unknown")
print(x)

I find it much easier to understand even as a golfy single line:

user_input = input("enter a single lowercase letter: ")
x = {"a": "A", "b": "B", "c": "C"}.get(user_input, "unknown")
print(x)