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The (Zen of Python)[https://peps.python.org/pep-0020/] states that “Special cases aren't special enough to break the rules.” It also states that “Explicit is better than implicit.” In my personal code I have no problem with the following:

x: Int = 5
y: StringLiteral = "Howdy Howdy!"
var z : String = str(x) + " " + y
print(z)

x: Int = 5
y: StringLiteral = "Howdy Howdy!"
var z : String = str(x) + " " + y
print(z)

Many believe that if the type can be inferred, there’s no need to write it. The main exception in this is when it’s a union like

var x: Int | None = None

var x: Int | None = None

, then you add the type declaration. I believe that it’s simpler to just have the type declaration everywhere so that there’s no “special cases” to “break the rules”. Again, “Explicit is better than implicit.” The main argument I see against this is the line “Simple is better than complex.” Often the claim is made that more type annotations adds complexity but I personally disagree though YMMV. It doesn’t necessarily make it more readable but IMO it doesn’t detract from it either. What are your thoughts? Any experiences that I should consider?

Modular•2y ago•

23 replies

moosems_yeehaw

Code Verbosity

x: Int = 5
y: StringLiteral = "Howdy Howdy!"
var z : String = str(x) + " " + y
print(z)

x: Int = 5
y: StringLiteral = "Howdy Howdy!"
var z : String = str(x) + " " + y
print(z)

Many believe that if the type can be inferred, there’s no need to write it. The main exception in this is when it’s a union like

var x: Int | None = None

var x: Int | None = None

Code Verbosity

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