چیت‌شیت Python

1message = "درود"2whole = 243decimal = 3.144complex_number = 2 + 3j5is_ready = True6is_empty = False

1tasks = ["طراحی", "پیاده‌سازی"]2tasks.append("آزمون")3tasks.extend(["بازبینی", "انتشار"])4first_task = tasks[0]5last_task = tasks[-1]6tasks.remove("بازبینی")7tasks.sort()89print(tasks)

1values = [3, 8, 11, 14, 20]2middle = values[1:4]3every_other = values[::2]4reversed_values = values[::-1]56squares = [number**2 for number in values]7large_squares = [number**2 for number in values if number >= 10]

1coordinate = (35.7, 51.4)2latitude, longitude = coordinate34unique_tags = {"python", "web", "python"}5unique_tags.add("data")6shared_tags = unique_tags & {"python", "design"}7all_tags = unique_tags | {"design"}89print(latitude, longitude)10print(shared_tags)

1profile = {"name": "سارا", "level": 2}2level = profile.get("level", 0)3profile["active"] = True4profile.update({"level": 3})56for key, value in profile.items():7    print(key, value)89del profile["active"]

1numbers = range(1, 8)2even_squares = (number**2 for number in numbers if number % 2 == 0)34for square in even_squares:5    print(square)

1text = "Python"2first = text[0]3last = text[-1]4middle = text[1:4]5backwards = text[::-1]67for character in text:8    print(character)

1raw = "  Python, web, data  "2clean = raw.strip()3parts = clean.split(", ")4joined = " | ".join(parts)5has_prefix = clean.startswith("Python")6has_suffix = clean.endswith("data")7position = clean.find("web")89print(joined, has_prefix, has_suffix, position)

1name = "آوا"2price = 12500003completion = 0.87545print(f"سلام {name}")6print(f"مبلغ: {price:,.0f}")7print(f"پیشرفت: {completion:.1%}")8print(f"محاسبه: {6 * 7 = }")

1name = "آوا"2count = 334legacy = "سلام %s، تعداد: %d" % (name, count)5formatted = "سلام {}، تعداد: {}".format(name, count)6named = "{user} ({role})".format(user=name, role="مدیر")78print(legacy, formatted, named)

1score = 8223if score >= 90:4    grade = "عالی"5elif 70 <= score < 90:6    grade = "خوب"7else:8    grade = "نیازمند تمرین"910print(grade)

1age = 202access = "مجاز" if age >= 18 else "نیازمند اجازه"3print(access)

1tasks = ["طراحی", "کدنویسی", "آزمون"]23for task in tasks:4    print(task)56for index, task in enumerate(tasks, start=1):7    print(index, task)89for number in range(2, 10, 2):10    print(number)

1attempts = 023while attempts < 5:4    attempts += 15    if attempts == 2:6        continue7    if attempts == 4:8        break9    print(attempts)

1names = ["آوا", "پارسا"]2scores = [18, 20]34for name, score in zip(names, scores):5    print(name, score)67for number in range(2, 10):8    if number % 7 == 0:9        print("پیدا شد:", number)10        break11else:12    print("موردی پیدا نشد")

1def greet(name: str, greeting: str = "سلام") -> str:2    return f"{greeting}، {name}!"345def add_tag(tag: str, tags: list[str] | None = None) -> list[str]:6    result = [] if tags is None else list(tags)7    result.append(tag)8    return result91011print(greet("آوا"))12print(add_tag("python"))

1def summarize(title: str, *values: int, **labels: str) -> None:2    print(title, sum(values))3    print(labels)456summarize("امتیاز", 10, 20, 30, unit="نمره", source="آزمون")

1def min_max(values: list[int]) -> tuple[int, int]:2    return min(values), max(values)345lowest, highest = min_max([8, 3, 12, 5])6print(lowest, highest)

1users = [2    {"name": "رها", "age": 29},3    {"name": "آوا", "age": 22},4]56by_age = sorted(users, key=lambda user: user["age"])7print(by_age)

1from pathlib import Path2from math import ceil, sqrt3import json as json_module456def main() -> None:7    print(sqrt(81), ceil(2.2))8    print(Path.cwd())91011if __name__ == "__main__":12    main()

1from pathlib import Path23path = Path("notes.txt")4path.write_text("یادداشت نخست\n", encoding="utf-8")56with path.open("r", encoding="utf-8") as file:7    for line_number, line in enumerate(file, start=1):8        print(line_number, line.rstrip())

1import json23profile = {"name": "آوا", "skills": ["Python", "SQL"]}45with open("profile.json", "w", encoding="utf-8") as file:6    json.dump(profile, file, ensure_ascii=False, indent=2)78with open("profile.json", "r", encoding="utf-8") as file:9    loaded_profile = json.load(file)1011print(loaded_profile["name"])

1raw_value = "42"23try:4    value = int(raw_value)5except ValueError as error:6    print(f"عدد معتبر نیست: {error}")7else:8    print("مقدار:", value)9finally:10    print("پایان بررسی")

1class InvalidScoreError(ValueError):2    pass345def validate_score(score: int) -> None:6    if not 0 <= score <= 100:7        raise InvalidScoreError("امتیاز باید بین ۰ تا ۱۰۰ باشد.")8910try:11    validate_score(120)12except InvalidScoreError as error:13    print(error)

1from pathlib import Path23file_path = Path("temporary.txt")4if file_path.is_file():5    file_path.unlink()67folder_path = Path("empty-folder")8if folder_path.is_dir():9    folder_path.rmdir()

1class Animal:2    def __init__(self, name: str) -> None:3        self.name = name45    def speak(self) -> str:6        return "صدای نامشخص"789animal = Animal("همراه")10print(animal.name, animal.speak())

1class Course:2    platform = "Novin Skills"34    def __init__(self, title: str) -> None:5        self.title = title678first = Course("Python")9second = Course("HTML")10print(first.platform, first.title)11print(second.platform, second.title)

1class Animal:2    def __init__(self, name: str) -> None:3        self.name = name45    def speak(self) -> str:6        return "..."789class Dog(Animal):10    def speak(self) -> str:11        return f"{self.name} می‌گوید: واق!"121314pet = Dog("هاپو")15print(pet.speak())

1class Product:2    def __init__(self, name: str, price: int) -> None:3        self.name = name4        self.price = price56    def __repr__(self) -> str:7        return f"Product(name={self.name!r}, price={self.price})"8910print(Product("دفتر", 85000))

1class TimestampMixin:2    def describe(self) -> str:3        return "زمان ثبت شد"456class Report(TimestampMixin):7    def describe(self) -> str:8        return f"{super().describe()}؛ گزارش آماده است"91011report = Report()12print(report.describe())13print(Report.mro())

1def doubled(values: list[int]):2    for value in values:3        yield value * 2456for result in doubled([2, 4, 6]):7    print(result)

1from collections import deque23queue = deque(["کار ۱", "کار ۲"])4queue.append("کار ۳")5queue.appendleft("کار فوری")67first = queue.popleft()8last = queue.pop()9print(first, last, list(queue))

1import heapq23priorities = [7, 2, 9, 4]4heapq.heapify(priorities)5heapq.heappush(priorities, 1)67next_priority = heapq.heappop(priorities)8print(next_priority)910max_heap = [-value for value in [7, 2, 9, 4]]11heapq.heapify(max_heap)12largest = -heapq.heappop(max_heap)13print(largest)