在JavaScript中我知道2个数据结构文字:
a)Object literal => {},例如
{ "first": "peter", "last": "miller }
b)数组文字=> [],例如
[ 4, 7, 8 ]
在JavaScript中,我喜欢这些文字,因为它们紧凑且易于阅读。
我读过Python也有一些:
数组文字:
[] => [ 4, 5 ]
字典文字:
{ "first": "peter", "last": "miller" }
元组文字:
() => (45, 69)
这些Python文字是否与JavaScript文字相当?
是否有更多Python数据结构文字?
字典文字和字典(...)之间有什么区别吗?
提前多多感谢
答案 0 :(得分:1)
问。这些Python文字是否与JavaScript文字相当?
JS objects are comparable to Python dicts
JS arrays are comparable to Python arrays
问。是否有更多Python数据结构文字?
Yes.
Python has tuples: (10, 20, 30)
Python has sets: {10, 20, 30}
问。字典文字和字典(...)之间有什么区别吗?
If you mean, a difference between JS and Python, the answer is Yes.
JS dictionaries (objects) must have a string as a key.
Python can use other types as a key.
JS object literals do not allow a trailing comma.
If you mean, a difference between Python literals and the dict() constructor,
the answer depends on how you use the dict contructor.
dict(a=1, b=2) # only allows keys to be valid identifiers that aren't keywords
dict([('x y', 0), ('def', 1), (12, 'tw')]) # is more flexible
{'x y': 0, 'def': 1, 12: 'tw'} # is flexible and equivalent
<强> P.S。强>
The are other JS versus Python differences besides the containers.
Python has "True". JS has "true"
Python has "None". JS has "none"
Python has four string quoting characters: ' " ''' """
答案 1 :(得分:0)
这些Python文字是否与JavaScript文字相当?
基本上是的。
JS:[1, 2, ,4] => [1, 2, undefined, 4]
Python:[1, 2, , 4] => invalid syntax
JS:{key: 'value'}
Python:{key: 'value'} => name 'key' is not defined
是否有更多Python数据结构文字?
设置:
{1,2,3}&lt; =&gt;设置([1,2,3])
字典文字和字典(...)之间有什么区别吗?
没有