基本数据类型

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1 整型int

作用：年龄、等级、各种号码

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age = 18
print(type(age))

2 浮点型float

作用：记录薪资、身高、体重等

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salary = 5.5
print(type(salary))
height = 1.81
weight = 73.5

3 字符串str

作用：记录名字、字符相关的描述性的内容

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name = "eg on你"
name = 'eg on你'
msg = """
eon你
"""

msg= "my name is 'egon'"
print(msg)

4 列表类型list

作用：按照位置存放多个值，可以用索引取指定位置的值

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hobbies = "read music play"
          0        1        2
hobbies = ["read", "music", "play"]
print(hobbies,type(hobbies))
print(hobbies[0])
print(hobbies[1])

     0   1   2       3
l = [10,3.3,"aaa",[666,777]]
print(l[3])
print(l[-1])

print(l[3][0])

5 字典类型dict

作用：按照key:value的形式存放多个值，其中value可以是任意类型，而key通常是str类型

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info = ["egon",18,"male",10]

info = {
    "name":"egon",
    "age":18,
    "gender":"male",
    "level":10
}
print(info["age"])

dic = {
    "k1":111,
    "k2":[666,"xxx",{"kkk":7777}]
}

print(dic["k2"][-1]['kkk'])

6 布尔类型bool

  • （1）显式的布尔值：

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    x = True
    y = False
    print(type(x))

    age1 = 18
    age2 = 20
    print(age1 > age2)
    print(age1 == age2)

  • （2）隐式的布尔值: 0、None、空的布尔值为False，其余均为真

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if 0:
print('ok')