AI-Learning

try:
lst = [1, 2, 3]
print(lst[5])
except IndexError:
print("Index out of range")

a = 10
b = 20
a, b = b, a
a

def calculate_discount(price, discount=0.1):
return price - (price * discount)

print(calculate_discount(100))
print(calculate_discount(200, 0.2))

x = "Python"
x * 3

import json
data = {"scores": {"Math": 90, "Science": 85}}
with open("scores.json", "w") as f:
json.dump(data, f, indent=4)
with open("scores.json", "r") as f:
loaded_data = json.load(f)
print(loaded_data["scores"]["Math"])

try:
result = 10 / 0
except ZeroDivisionError:
print("Cannot divide by zero")

import json
data = {"name": "Eve", "age": 27, "skills": ["coding", "testing"]}
with open("profile.json", "w") as f:
json.dump(data, f)
with open("profile.json", "r") as f:
print(f.read())

import json
data = {"name": "Frank", "age": 28, "is_student": False}
json_string = json.dumps(data, sort_keys=True)
print(json_string)

def identity(value=100):
return value

print(identity())
print(identity(50))

10 / 3

import json
json_data = '{"id": 101, "name": "Alice", "is_active": true}'
data = json.loads(json_data)
print(data["id"])

def add_items(item, items=None):
if items is None:
items = []
items.append(item)
return items

print(add_items("apple"))
print(add_items("banana"))

import json
data = {"name": "Frank", "hobbies": ["reading", "traveling", "coding"]}
with open("hobbies.json", "w") as f:
json.dump(data, f, indent=2)

def greet_many(times=1):
return "Hello! " * times

print(greet_many())
print(greet_many(3))

try:
open("nonexistent_file.txt", "r")
except FileNotFoundError:
print("File not found")
finally:
print("Execution complete")

def increment(number, step=1):
return number + step

print(increment(5))
print(increment(5, 2))

import json
data = {"status": None, "valid": True}
json_string = json.dumps(data)
print(json_string)

Hello
World!

x = int("hello")

import json
json_data = '{"key": null}'
data = json.loads(json_data)
print(data["key"] is None)

def default_and_keyword(x, y=10, *, z):
return x + y + z

print(default_and_keyword(1, z=5))

try:
with open("nonexistent.txt", "r") as f:
content = f.read()
except FileNotFoundError as e:
print("Error:", e)

try:
x = int("42")
y = int("hello")
print(x + y)
except ValueError as e:
print("Error:", e)

def modify_list(lst):
lst[0] = 100

a = [1, 2, 3]
modify_list(a)
print(a)

x = [1, 2, 3]
y = x.copy()
y.append(4)
print(x)
print(y)

def add(a, b=2):
return a + b

result1 = add(5)
result2 = add(5, 3)

print(result1, result2)

import json
data = {"name": "Bob", "age": 30, "city": "Tokyo"}
json_data = json.dumps(data)
print(type(json_data))

5 + 5