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print("Hello, World!", 2 + 2)

python3 -m pyv2 hello.pyv2

# explain why, not what
answer = 42

name = "Comet"
score = 10

print(1, 2.5, 1e-3)

print(10 / 4, 10 // 4, 7 % 3, 2 ** 8)

title = "Python v2"
print(title.upper())

name = "Ada"
print(f"Hello, {name}: {2 ** 8}")

ready = true
print(ready and not false)

missing = nil
print(type(missing))

if []: print("no") else: print("empty") end

if score > 5:
    print("high")
end

if n < 0: print("negative")
elif n == 0: print("zero")
else: print("positive") end

label = score >= 60 ? "pass" : "retry"

n = 3
while n > 0: print(n) n -= 1 end

while true:
    break
end

for n in range(5):
    if n % 2 == 0: continue end
    print(n)
end

for name in ["Ada", "Grace"]: print(name) end

for i in range(10, 0, -2): print(i) end

for ch in "snake": print(ch) end

items = [1, "two", true]
print(items[-1])

xs = [1, 2]
xs.push(3)
print(xs.pop(), xs)

print([0, 1, 2, 3].slice(1, 3))

print([3, 1, 2].sort())
print(sum(range(5)))
print(enumerate(["a", "b"], 1))
print(zip([1, 2], ["a", "b"]))

hero = {name: "Ada", hp: 100}

hero.city = "London"
print(hero.name, hero.city)

print(hero.get("armor", 0))

fn add(a, b):
    return a + b
end

fn sign(n):
    if n < 0: return -1 end
    return 1
end

fn counter():
 n = 0
 fn bump(): n += 1 return n end
 return bump
end

fn fib(n):
 if n < 2: return n end
 return fib(n-1) + fib(n-2)
end

square = fn(x): return x * x end
print(square(7))

print("  comet  ".trim().title())

print("a,b,c".split(",").join(" - "))

print(int("42"), float("2.5"), type(true))

assert(len([1, 2]) == 2, "list size changed")

try: raise "stop"
catch error: print(error.kind, error.message)
finally: print("clean")
end

python3 -m pyv2

pyv2 new windows-app "My App"
pyv2 check My-App
pyv2 build My-App

Ctrl+Shift+B  # run current .pyv2 file

.devcontainer/devcontainer.json

pyhope --studio
# New Project → Windows app

direction = Vec2(3, 4).normalized()

world = TileMap.from_text("###\n#.#\n###")

hero = Sprite("hero", Vec2(1.5, 1.5), "@")

@engine.system
def gravity(scene, dt): ...

hit = raycast(world, origin, direction)

assets/sprites/LICENSE.md

games.html#gpu

pyv2 check My-App
pyv2 build My-App --native