[Python知识库]python基础学习-02

# The python data types

"""
文本类型： str
数字类型： int,float,complex
序列类型：list,tuple,range
映射类型：dict
套装类型：set,frozenset
布尔类型：bool
二进制类型：bytes,bytearray,memoryview
"""

# How to get the data type?
x = 6
print(type(x))

# Setting the data type

# str字符串
x = "This is one sentence"
print(x)
print(type(x))
# int整形
y = 2
print(y)
print(type(y))
# float 浮点类型
z = 6.5
print(z)
print(type(z))
# complex复数形式
a = 2j
print(a)
print(type(a))
# list列表
b = ["apple", "banana", "cherry"]
print(b)
print(type(b))
# tuple元组类型
c = ("apple", "banana", "cherry")
print(c)
print(type(c))
# range范围类型
x = range(6)
print(x)
print(type(x))
# dict字典类型
x = {"name": "tom", "age": 36}
print(x)
print(type(x))
# set集合类型
x = {"apple", "banana", "cherry"}
print(x)
print(type(x))
# 不常用的冻结类型
x = frozenset({"apple", "banana", "cherry"})
print(x)
print(type(x))
# bool布尔类型
x = True
print(x)
print(type(x))
# 不常用的byte字节类型
x = b"Hello"
print(x)
print(type(x))
# 不常用的bytearray字节数组类型
x = bytearray(5)
print(x)
print(type(x))
# 冷门到爆的memoryview内存试图类型
x = memoryview(bytes(5))
print(x)
print(type(x))
# 强调x为字符串类型
x = str("This is one sentence")
print(x)
print(type(x))

# test
"""
1.下面的结果是什么类型？
(1) x = 5
    print(type(x))
int 整型
(2) x = "Hello World"
    print(type(x))
str 字符串
(3) x = 20.5
    print(type(x))
float 浮点数
(4) x = ["apple", "banana", "cherry"]
    print(type(x))
list 列表
(5) x = ("apple", "banana", "cherry")
    print(type(x))
tuple 元组
(6) x = {"name" : "John", "age" : 36}
    print(type(x))
dict 字典
(7) x = True
    print(type(x))
bool 布尔类型
"""