West Midlands | July SDC | Gabriel Deng | Sprint 4 | Prep exercises

prep exercises/bank_account.py

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+from typing import Dict
+
+def open_account(balances: Dict[str, int], name: str, amount: int) -> None:
+    balances[name] = amount
+
+def sum_balances(accounts: Dict[str, int]) -> int:
+    total = 0
+    for name, pence in accounts.items():
+        print(f"{name} had balance {pence}")
+        total += pence
+    return total
+
+def format_pence_as_string(total_pence: int) -> str:
+    if total_pence < 100:
+        return f"{total_pence}p"
+    pounds = int(total_pence / 100)
+    pence = total_pence % 100
+    return f"£{pounds}.{pence:02d}"
+
+balances = {
+    "Sima": 700,
+    "Linn": 545,
+    "Georg": 831,
+}
+
+open_account(balances, "Tobi", 913)
+open_account(balances, "Olya", 713)
+
+total_pence = sum_balances(balances)
+total_string = format_pence_as_string(total_pence)
+
+print(f"The bank accounts total {total_string}")

prep exercises/dataclasses_exercise.py

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+from dataclasses import dataclass
+from datetime import date
+
+@dataclass(frozen=True)
+class Person:
+    name: str
+    date_of_birth: str
+    preferred_operating_system: str
+
+    def is_adult(self):
+        today_date = date.today()
+        birth_date = date.fromisoformat(self.date_of_birth)
+        age = today_date.year - birth_date.year
+
+        if (today_date.month, today_date.day) < (birth_date.month, birth_date.day):
+            age -= 1
+
+        return age >= 18
+
+
+imran = Person("Imran", "2007-11-02", "Ubuntu")
+
+print(imran.is_adult())

prep exercises/generic_exercise.py

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+from dataclasses import dataclass
+from typing import List
+from datetime import date
+
+@dataclass(frozen=True)
+
+class Person:
+    name: str
+    children: List["Person"]
+    date_of_birth: str
+
+    def person_age(self) -> int:
+        today_date = date.today()
+        birth_date = date.fromisoformat(self.date_of_birth)
+        age = today_date.year - birth_date.year
+
+        if (today_date.month, today_date.day) < (birth_date.month, birth_date.day):
+            age -= 1
+        return age
+
+
+fatma = Person(name="Fatma", children=[], date_of_birth="2010-06-15")
+aisha = Person(name="Aisha", children=[], date_of_birth="2012-09-20")
+
+imran = Person(name="Imran", children=[fatma, aisha], date_of_birth="1998-10-16")
+
+def print_family_tree(person: Person) -> None:
+    print(f"{person.name} (Age: {person.person_age()})")
+
+    for child in person.children:
+        print(f"- {child.name} ({child.person_age()})")
+
+print_family_tree(imran)

prep exercises/objects_and_classes.py

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+from datetime import date
+
+class Person:
+    def __init__(self, name: str, date_of_birth: str, preferred_operating_system: str, address: str):
+        self.name = name
+        self.date_of_birth = date.fromisoformat(date_of_birth)
+        self.preferred_operating_system = preferred_operating_system
+        self.address = address
+
+    def is_adult(self):
+        today_date = date.today()
+
+        return (today_date.year - self.date_of_birth.year) >= 18
+
+
+imran = Person("Imran", "2005-12-04", "Ubunut", "Wardend Road, Birmingham")
+
+print(imran.is_adult())

prep exercises/test.py

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+def triple(n): 
+    return n * 3
+
+num = triple(21)
+print(num)