Python データ型ガイド: 一般的なデータ型とその応用をマスターする

x = 5
y = 2.5
z = 3 + 2j

print(x + y)      # 输出：7.5
print(x * y)      # 输出：12.5
print(z.real)     # 输出：3.0
print(z.imag)     # 输出：2.0

message = "Hello, World!"
name = "John"
age = 25

print(message)                 # 输出：Hello, World!
print("My name is " + name)    # 输出：My name is John
print(f"I am {age} years old") # 输出：I am 25 years old

fruits = ['apple', 'banana', 'orange']

print(fruits[0])         # 输出：apple
fruits.append('grape')   # 添加元素
print(fruits)            # 输出：['apple', 'banana', 'orange', 'grape']
fruits.remove('banana')  # 删除元素
print(fruits)            # 输出：['apple', 'orange']

point = (3, 4)
date = (2021, 8, 15)

print(point[0])    # 输出：3
print(date[1])     # 输出：8

student = {'name': 'John', 'age': 25, 'grade': 'A'}

print(student['name'])          # 输出：John
print(student.get('age'))       # 输出：25
student['age'] = 26             # 修改值
print(student)                  # 输出：{'name': 'John', 'age': 26, 'grade': 'A'}
student['country'] = 'USA'      # 添加键值对
print(student)                  # 输出：{'name': 'John', 'age': 26, 'grade': 'A', 'country': 'USA'}