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1. Top results related to what is python dictionary methods?

   • What data structure python dictionary is?

     Top Answer

     Answered Dec 20, 2018 · 0 votes

     Quoting the docs I'd say:

     Dictionaries are sometimes found in other languages as “associative memories” or “associative arrays”.

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     1/5

   • what is time complexity of python Dictionary.values()?

     Top Answer

     Answered May 14, 2021 · 1 votes

     Q(1)：I think it is O(1)

     edit:I was wrong.It is O(n).Thanks to @Roy Cohen and @kaya3.

     test code:

     import timeitdef timeis(func): def wrap(*args, **kwargs): start = timeit.default_timer() result = func(*args, **kwargs) end = timeit.default_timer() print(func.__name__, end-start) return result return wrapimport random@timeisdef dict_values_test(dic,value): return value in dic.values()tiny_dic = {i : 10*i for i in range(1000)}value = random.randint(1,1000)dict_values_test(tiny_dic,value)small_dic = {i : 10*i for i in range(1000000)}value = random.randint(1,1000000)dict_values_test(small_dic,value)big_dic = {i : 10*i for i in range(100000000)}value = random.randint(1,100000000)dict_values_test(big_dic,value)

     result:

     dict_values_test 2.580000000002025e-05dict_values_test 0.015847600000000073dict_values_test 1.4836825999999999

     Q(2):

     code:

     def find_key_by_value(dic,find_value): return [k for k,v in dic.items() if v == find_value] dic = {1:10,2:20,3:30,4:40,5:40}print(find_key_by_value(dic,40))

     result:

     [4, 5]-

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     2/5

   • What is better in python, a Dictionary or Mysql?

     Top Answer

     Answered Oct 10, 2010 · 5 votes

     Generally speaking, if you want information from a database, ask the database for what you need. MySQL (and other database engines) are designed to retrieve data as efficiently as possible.

     Trying to write your own procedures for retrieving data is trying to outsmart the talented people who have already imbued MySQL with so much data processing power.

     This isn't to say it's never appropriate to load data into Python, but you should be sure that a database query isn't the right way to go first.

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     3/5

   • what is the order of looping (for loop) in python dictionary

     Top Answer

     Answered Jun 16, 2017 · 7 votes

     Python dictionaries don't have an order. However, you can specify an order by using the sorted(domains) function. By default, it sorts using the key.

     for key in sorted(domains): print key-

     will produce

     dehunoskus

     If you want to order based on values, you can use something like sorted(domains.items(), key = lambda(k, v): (v, k)).

     Check all answers on Stack Overflow

     4/5

   • What is an elegant way to convert a python dictionary into a comma separated keys string and a comma separated values string?

     Top Answer

     Answered May 04, 2015 · 17 votes

     Use str.join(iterable)

     (Hint: don't name your dict dict

     ):

     d = {'a':'1', 'b':'2', 'c':'3'}print(",".join(d.keys()))print(",".join(d.values()))

     Output:

     c,a,b3,1,2

     Note that a dictionary has no order. So the output does not have any order you can rely on, too.

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     5/5

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2. www.geeksforgeeks.org › how-to-learn-python-fromHow to Learn Python from Scratch in 2024 - GeeksforGeeks

   www.geeksforgeeks.org › how-to-learn-python-from

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   8 hours ago · Bound, unbound, and static methods in Python; Multiple inheritance in Python; __new__ in Python; File Handling. File handling is the ability of Python to handle files i.e. to read and write files along with many other file handling options. Python treats files differently as text or binary and this is important.

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4. tonyzeljkovic.substack.com › p › data-code-modelData code model part II: Python Typing - by Tony Zeljkovic

   tonyzeljkovic.substack.com › p › data-code-model

   8 hours ago · Python type hints do NOT impact your python code during runtime. They can be used by other libraries to create additional behavior, but in the “vanilla” implementation, they don’t impact how your code runs which is intended by design.

5. stackoverflow.com › questions › 78515887How to get printed response from async function in Python

   stackoverflow.com › questions › 78515887

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   8 hours ago · In US Patents, is a novel "realization" or discovery in itself patentable; in such cases can/do multiple methods/apparatus form the SAME patent? is there any spell or magic item that can give a familiar the flyby ability?

6. www.aiforbeginners.org › 2024/05/22 › how-long-doesHow Long Does It Really Take to Learn Natural Language ...

   www.aiforbeginners.org › 2024/05/22 › how-long-does

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   8 hours ago · Python: Python is widely considered to be the most popular programming language for NLP. It has a large number of NLP libraries and frameworks available, making it a convenient choice for beginners. Python's easy-to-learn syntax and extensive documentation make it an ideal language for learning NLP.

7. devcodef1.com › news › 1266145Partial Substring Replace: Swapping Column Values in Two ...

   devcodef1.com › news › 1266145

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   8 hours ago · Create a mapping dictionary to map the values from df1 to df2 and vice versa. Use the map() function to replace the values in the respective columns of df1 and df2. Verify the updated dataframes.

8. aihub.hkuspace.hku.hk › 2024/05/22 › create-aCreate a multimodal assistant with advanced RAG and Amazon ...

   aihub.hkuspace.hku.hk › 2024/05/22 › create-a

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   8 hours ago · This technique not only improves upon existing methods but also paves the way for more advanced, interactive learning frameworks for language models. The ultimate goal is to move towards a future where language models can learn from bidirectional conversations, enabling more effective reasoning and problem-solving capabilities. # Decomposition

9. link.springer.com › chapter › 10Constructing Policy Domain Dictionary Generated by DTM ...

   link.springer.com › chapter › 10

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   May 23, 2024 · However, these methods generally suffer from limitations such as coarse granularity and the inability to reflect longitudinal time features. Therefore, this study adopts the DTM-EM method to construct a policy domain-specific dictionary for identifying policy response features of publicly listed companies in the electric vehicle sector.