str_single = "Hello"
str_multiline = """Multiline
string"""
print(str_multiline.upper())

name = "John Doe"
print(name.lower())  # john doe
print(name.split())  # ['John', 'Doe']

integer = 42
floating_point = 3.14
complex_number = 2 + 3j

# Converting between types
float_to_int = int(3.7)  # 3

import numpy as np
array = np.array([1, 2, 3])
print(array.mean())  # 2.0