Python's program structure [4]--function/function----built-in function

built-in functions /built-in function or Method

There are many built-in functions in Python (see the 3.6.1 section), where the built-in functions are described

built-in functions ord/built-in function ord

Python's built-in function, Ord, is to convert a single character in an ASCII code table to the corresponding decimal integer data .

>>> Ord ('b')  98  >>> ord ('c'  )  99  

built-in functions hex/built-in function Hex

Python's built-in function, Hex, converts a decimal integer data into a hexadecimal-represented string , and the hex differs from binascii.hexlify in that the hex accepts only the shaping data and does not accept the string.

>>> Hex (88)  '0x58'>>> 1.44. Hex ()'0x1.70a3d70a3d70ap+0'>>> Hex (' the') Traceback (most recent): File"<pyshell#2>", Line 1,inch<module>Hex (' the') TypeError:'Str'Object cannot is interpreted as an integer

built-in functions bin/built-in function bin

Python's built-in function is to convert a decimal integer data into a binary-represented string .

>>> bin (0b1011001)  '  >>> bin (3)   ' 0B11 '  

built-in functions otc/built-in function OTC

Python's built-in function The OTC effect is to convert a decimal integer data into an octal representation of a string .

>>> Oct (+)  '0o20'  >>> Oct (+)   '0o310'  

built-in functions chr/built-in function chr

Python's built-in function is to convert a decimal integer data into a single character corresponding to the ASCII code table.

>>> chr (98)  'b'    >>> chr  a'  

Python's program structure [4]--function/function----built-in function