内置函数的表格与详情

>>> abs(-5)

5

>>> all([-1,2,3,4,5])

True

>>> all((-1,2,3,4))

True

>>> all([])

True

>>> all([-1,0,2,3,4])

False

>>> any([-1,0,1,2,3])

True

>>> any([])

False

>>> any([0])

False

>>> any([1])

True

>>> ascii([1,2,3,4])

'[1, 2, 3, 4]'

>>> bin(11111)

'0b10101101100111'

>>> bin(-1223)

'-0b10011000111'

>>> bin(1.2)

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: 'float' object cannot be interpreted as an integer

>>> bool([1,2,3,4])

True

>>> bool([])

False

>>> bool("1")

True

>>> bool("sfasfsa")

True

>>> bool("")

False

>>> bool(-1)

True

>>> bool(0)

False

>>> bool()

False

>>> bool({})

False

>>> bool({"sdf":1})

True

>>> bool(())

False

>>> bool((1,2))

True

>>> bool(3>5)

False

>>> bool(3<5)

True

>>> b=bytearray("abcd",encoding="utf-8")

>>> b[0]     # 打印第一个元素的ascii值

97

>>> b[0]=100   # 修改第一个元素的ascii值，赋值只能是ascii值

>>> b

bytearray(b'dbcd')

>>> b=bytes("abcd",encoding="utf-8")

>>> b

b'abcd'

>>> b[0]

97

>>> b[0]=100

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: 'bytes' object does not support item assignment

>>> callable([])

False

>>> def bus():pass

...

>>> callable(bus)

True

>>> chr(99)

'c'

>>> ord("c")

99

#传入非固定关键字参数

>>> dict(name="bigberg",age=22)

{'name': 'bigberg', 'age': 22}

# 传入列表

>>> s_list=[("name","bigberg"),("age",22)]

>>> dict(s_list)

{'name': 'bigberg', 'age': 22}

>>> n_list=[['names',['zhangsan','lisi','wangwu']],['job',['doctor','teacher','police']]]

>>> dict(n_list)

{'names': ['zhangsan', 'lisi', 'wangwu'], 'job': ['doctor', 'teacher', 'police']}

>>> divmod(14,3)

(4, 2)

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

print(list(enumerate(fruits)))

#输出

[(0, 'apple'), (1, 'orange'), (2, 'banana')]

>>> s = "5+989"

>>> eval(s)

994