Wizualizacja danych
- Wykład 4

stack = [3, 4, 5, 8, 9]
stack.append(6)
stack.append(7)
print(stack)
print(stack.pop())
print(stack)

from collections import deque

queue = deque(["aw", "tg", "kj"])
queue.append("gg")
print(queue)
print(queue.popleft())
print(queue)

squares = []
for x in range(5):
    squares.append(x ** 2)

print(squares)

squares = [x**2 for x in range(5)]
print(squares)

krotka = 123, 'abc', True
krotka2 = (123, 'abc', True)
print(krotka[2])

cyfry = {'raz', 'dwa', 'raz', 'trzy', 'raz', 'osiem'}
print(cyfry)

x = {2, 3, 4, -3, 5, 2}
y = {5, 6, 7}
z = {'a', 'b'}
w = {3, 4}
print(x)
print(len(x))
print(0 in x)
print(0 not in x)

x = {2, 3, 4, -3, 5, 2}
y = {5, 6, 7}
z = {'a', 'b'}
w = {3, 4}
print(x.isdisjoint(y))
print(x.isdisjoint(z))
print(w.issubset(x))
print(x.issubset(w))
print(w <= x)
print(w < x)
print(w.issuperset(x))
print(x.issuperset(w))
print(w >= x)
print(w > x)

x = {2, 3, 4, -3, 5, 2}
y = {5, 6, 7}
z = {'a', 'b'}
w = {3, 4}
print(x.union(y))
print(x | y)
print(x.intersection(y))
print(x & y)
print(x.difference(y))
print(x - y)
print(x.symmetric_difference(y))
print(x ^ y)
print(x.copy())  # płytka kopia

x = {2, 3, 4, -3, 5, 2}
print(x)
x.add(11)
print(x)
x.remove(-3)  # usuwa gdy jest, inaczej KeyError
print(x)
x.discard(12)
print(x)

x = {2, 3, 4, -3, 5, 2}
print(x)
x.discard(2)
print(x)
x = {2, 3, 4, -3, 5, 2}
print(x.pop())
print(x)
x.clear()
print(x)

tel = {'jack': 4098, 'sape': 4139}
tel['guido'] = 4127
print(tel)
tel['jack']
del tel['sape']
tel['irv'] = 4127
print(tel)

d = {"one": 1, "two": 2, "three": 3, "four": 4}
print(d)
print(list(d))
print(list(d.values()))
d["one"] = 42
print(d)
del d["two"]
print(d)
d["two"] = None
print(d)

d = {"one": 1, "two": 2, "three": 3, "four": 4}
print(d)
print(list(reversed(d)))
print(list(reversed(d.values())))
print(list(reversed(d.items())))

d = {"one": 1, "two": 2, "three": 3, "four": 4}
print("one" in d)
print(1 in d)
print("one" not in d)
print(1 not in d)
print(iter(d))
for elem in iter(d):
    print(elem)

d = {"one": 1, "two": 2, "three": 3, "four": 4}
d.clear()
print(d)
d = {"one": 1, "two": 2, "three": 3, "four": 4}
e = d.copy() # płyta kopia
print(e)

x = ('key1', 'key2', 'key3')
y = 0
d1 = dict.fromkeys(x, y)
print(d1)
z = (3, 4, 5)
d2 = dict.fromkeys(x, z)
print(d2)

d = {"one": 1, "two": 2, "three": 3, "four": 4}
print(d.get("two"))
print(d.items())
print(d.keys())
print(d.pop("three"))
print(d)
print(d.popitem())
print(d)

d = {"one": 1, "two": 2, "three": 3, "four": 4}
d.update(red=1, blue=2)
print(d)
print(d.values())

d = {"one": 1, "two": 2, "three": 3, "four": 4}
d2 = {"a": 11, "b": 12}
d3 = d | d2
print(d3)
print(d)
d |= d2
print(d)

a = [3, 4, 5]
print(a)
a2 = [i**2 for i in a]
print(a2)
a3 = {i**2 for i in a}
print(a3)
a4 = {i: i**2 for i in a}
print(a4)

a = [3, 4, 5]
print(a)
a2 = (i**2 for i in a)
print(a2)
for i in a2:
    print(i)

a = [3, 4, "w", 5]
print(a)
w = [i*i for i in a if isinstance(i, int)]
print(w)

a = [3, 4, "w", 5]
print(a)
w = [i*i if isinstance(i, int) else i for i in a]
print(w)

a = "Olsztyn"
print(a)
print(a[3])
#a[2] = 'w'

a = "Olsztyn"
b = "Gdańsk"
print(a + b)
print(a * 2)
print(2 * a)

print("A" < "a")
print("Abc" < "aTw")
print("vccx" < "123")
print("ABC" < "AB")
print("AB" < "ABC")

a = "abc"
str = "a to %s" % a
print(str)
b = 4
c = 5
str2 = "%d + %d = %d" % (b, c, b + c)
print(str2)

a = "abc"
str = "a to {}".format(a)
print(str)
b = 4.2
c = 5
str2 = "{0} + {1} = {2}".format(b, c, b + c)
print(str2)

b = 4.2
c = 5
str2 = "{0:f} + {1:d} = {2:e}".format(b, c, b + c)
print(str2)

a = "abc"
str = f"a to {a}"
print(str)
b = 4.2
c = 5
str2 = f"{b} + {c} = {b+c}"
print(str2)

b = 4.2
c = 5
str2 = f"{b:f} + {c:d} = {b+c:e}"
print(str2)