Python のタプル

# A tuple is an ordered collection that cannot be changed after it is created.
point = (3, 4)
colors = ("red", "green", "blue")

print(point[0], point[1])
print(len(colors), colors[-1])

# Unpacking assigns each item to its own variable.
x, y = point
print(f"x = {x}, y = {y}")

# Functions can return several values as a tuple.
def min_max(values):
    return min(values), max(values)

low, high = min_max([7, 2, 9, 4])
print(low, high)

# Swap two variables without a temporary one.
a, b = 1, 2
a, b = b, a
print(a, b)

# Trying to change a tuple raises an error.
try:
    point[0] = 10
except TypeError as error:
    print("Error:", error)