Builtins

values: dict[str, float] = {}
values['close'] = 42.0
close = values['close']

# examples of list creation:
a = [1, 2, 3]  # `a` has type `list[int]`
b = [1, 2, 3, 4.2]  # `b` has type `list[float]`
c = ["a", "b", "c"]  # `c` has type `list[str]`
d = [(1, "a"), (2, "b"), (3, "c")]  # `d` has type `list[tuple[int, str]]`

e = [0, 1, 2, 3, 4, 5, 6, 7]
f = e[2:5]  # `f` is `[2, 3, 4]`
g = e[:5]  # `g` is `[0, 1, 2, 3, 4]`
h = e[2:]  # `h` is `[2, 3, 4, 5, 6, 7]`
i = e[:]  # `i` is a copy of `e`
j = e[1:7:2]  # `j` is `[1, 3, 5]`
k = e[5:2:-1]  # `k` is `[5, 4, 3]`
l = e[5::-1]  # `l` is `[5, 4, 3, 2, 1, 0]`
m = e[::-1]  # `m` is `[7, 6, 5, 4, 3, 2, 1, 0]`

x = 0
for i in range(10):
    x += i

# examples of slices extraction:
a = '01234567'
b = a[2:5]  # `b` is '234'
c = a[:5]  # `c` is '01234'
d = a[2:]  # `d` is '234567'
e = a[:]  # `e` is a copy of `a`
f = a[1:7:2]  # `f` is '135'
g = a[5:2:-1]  # `g` is '543'
h = a[5::-1]  # `h` is '543210'
i = a[::-1]  # `i` is '76543210'