import itertools a = [1,2] b = itertools.count(3) c = itertools.chain(a,b) print([next(c) for _ in range(5)]) [Running] python3 -u...

def f(a, L=[]): L.append(a) return L print(f(1)) print(f(2, [])) print(f(3)) [Running] python3 -u "/Users/name/test/test67.py" [1] [2]...

class Meta(type): def __new__(cls, name, bases, dct): dct["id"] = 99 return super().__new__(cls, name, bases, dct) class...

def append_item(item, container=[]): container.append(item) return container print(append_item(1), append_item(2)) [Running] python3 -u...

import pandas as pd s = pd.Series([5, 8, 12, 18, 22]) s[s < 10] *= 2 print(s.sum()) [Running] python3 -u "/Users/name/test/test95.py" 78...

import numpy as np arr = np.array([3, 15, 8, 22, 7]) mask = arr < 10 arr[mask] = 0 print(np.sum(arr)) [Running] python3 -u...

def make_funcs(): return [lambda x: i * x for i in range(3)] funcs = make_funcs() results = [f(2) for f in funcs] print(results)...

from collections import Counter def letter_counts(word): c = Counter(word) for k, v in c.items(): yield k, v...

def flatten(lst): for item in lst: if isinstance(item, list): yield from flatten(item) else: yield item print(list(flatten([1,...

def track_yields(): for i in range(3): print(f"Yielding {i}") yield i print("Done") for val in track_yields(): pass [Running]...

def chooser(val): if val == "a": yield from [1, 2] else: yield from [3, 4] print(list(chooser("b"))) [Running] python3 -u...

def early_exit(): for i in range(10): if i > 3: return yield i print(list(early_exit())) [Running] python3 -u...

def values(): for i in range(10): yield i filtr = filter(lambda x: x % 2 == 0, values()) print(list(filtr)) [Running] python3 -u...

a = True b = False c = False if a or b and c: print("Correct") else: print("Incorrect") [Running] python3 -u...

def squares(): for i in range(1, 4): yield i*i s = squares() print(list(s)) [Running] python3 -u "/Users/name/test/test61.py" [1, 4,...

def g(): yield 1 yield 2 x = g() print(next(x)) print(next(x)) print(next(x)) [Running] python3 -u "/Users/name/test/test47.py" 1 2...

def string_only(f): def wrap(x): return f(x) if isinstance(x, str) else "Invalid" return wrap @string_only def echo(s): return s + s...

def pack(f): def wrap(x): return (f(x), x) return wrap @pack def square(x): return x ** 2 print(square(3)[1]) [Running] python3 -u...

def factory(n): return lambda x: x ** n square = factory(2) cube = factory(3) print(square(3), cube(2)) [Running] python3 -u...

import inspect def f(x, y=2): return x + y sig = inspect.signature(f) print(sig.parameters['y'].default) [Running] python3 -u...