Detailed explanation of Python basic brackets () [] {}

Time:2022-5-11
catalogue
  • 1. Parentheses in python ()
  • 2. Brackets [] in Python
  • 3. Python curly braces {} curly braces

preface:

PythonThere are three main data types: dictionary, list and tuple. They are represented by curly brackets, square brackets and small brackets respectively.

For example:

  • Dictionaries:dic={'a':12,'b':34}
  • List:list=[1,2,3,4]
  • Tuple:tup=(1,2,3,4)

pythonThere are three most common kinds of parentheses in languages: parentheses (), brackets [] and curly braces, also known as curly braces {}. Its functions are also different, which are used to represent differentpythonBasic built-in data type.

1. Parentheses in python ()

representativetupleTuple data type, tuple is an immutable sequence. The creation method is very simple. Most of the time, it is enclosed in parentheses.

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>>> tup = (1,2,3)
>>> tup
(1,2,3)
>>>
>>>()#Empty tuple
()
>>>
>>>55,#Tuple of a value
(55,)

2. Brackets [] in Python

representativelistList data type. A list is a variable sequence. Its creation method is simple and special,Like the following:

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>>>list('python ')
[ 'p', 'y', 't', 'h', 'o', 'n']

3. Python curly braces {} curly braces

representativedictDictionary data type. A dictionary is composed of key pair value groups. colonSeparate key and value, comma ‘‘separate groups.

The method of creating with braces is as follows:

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>>> dic= {'jon':'boy','lili':'girl'}
>>> dic
{'lili':'girl','jon':'boy'}
>>>

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