first commit

task15/task15D.py

@@ -0,0 +1,115 @@
+def hello(x=None) -> str:
+    s = "Hello"
+    if x:
+        s += f", {x}"
+
+    return s + "!"
+
+
+def int_to_roman(x: int) -> str:
+    match = [
+        (1000, "M"),
+        (900, "CM"),
+        (500, "D"),
+        (400, "CD"),
+        (100, "C"),
+        (90, "XC"),
+        (50, "L"),
+        (40, "XL"),
+        (10, "X"),
+        (9, "IX"),
+        (5, "V"),
+        (4, "IV"),
+        (1, "I"),
+    ]
+
+    lst = []
+    for num, text in match:
+        while x >= num:
+            x -= num
+            lst.append(text)
+
+    return "".join(lst)
+
+
+def longest_common_prefix(x: list[str]) -> str:
+    if not x:
+        return ""
+
+    s = x[0].strip()
+    ind = 0
+    flag = False
+
+    while ind < len(s):
+        for word in x:
+            word = word.strip()
+            if len(word) <= ind or word[ind] != s[ind]:
+                flag = True
+                break
+        if flag:
+            break
+
+        ind += 1
+
+    if ind == -1:
+        return ""
+
+    return s[:ind]
+
+
+class BankCard:
+    def __init__(self, total_sum: int, balance_limit: int = -1) -> None:
+        self.total_sum = total_sum
+        self.balance_limit = balance_limit
+
+    @property
+    def balance(self) -> int:
+        if self.balance_limit == 0:
+            raise ValueError("Balance check limits exceeded.")
+
+        self.balance_limit -= 1
+
+        return self.total_sum
+
+    def put(self, sum_put: int):
+        self.total_sum += sum_put
+        print(f"You put {sum_put} dollars.")
+
+        return self
+
+    def __add__(self, other):
+        if self.balance_limit == -1 or other.balance_limit == -1:
+            new_balance_limit = -1
+        else:
+            new_balance_limit = max(self.balance_limit, other.balance_limit)
+
+        return type(self)(self.total_sum + other.total_sum, new_balance_limit)
+
+    def __call__(self, sum_spent: int) -> None:
+        if self.total_sum < sum_spent:
+            raise ValueError(f"Not enough money to spend sum_spent dollars.")
+
+        self.total_sum -= sum_spent
+        print(f"You spent {sum_spent} dollars")
+
+        return
+
+    def __str__(self) -> str:
+        return "To learn the balance call balance."
+
+
+def primes():
+    pr = 2
+
+    while True:
+        flag = False
+
+        for n in range(2, int(pr**0.5) + 1):
+            if pr % n == 0:
+                flag = True
+                break
+
+        if not flag:
+            yield pr
+
+        pr += 1