get value given key python

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getting the value of a key in python [duplicate]
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2answered Dec 23, 2015 at 3:59
Are you using Python 2.7 or Python 3?
If you're using 2.7, then you need to use raw_input(), since input() is equivalent to eval(raw_input()), which you probably don't want:

name = raw_input("enter a name: ")
If you're using 3, then print needs to be a function:

print(dict[name])
...
print("no data")
However, common to both versions, some fixing needs to be applied.
First thing is, you don't need to use has_key(). I'm pretty sure this is defunct now, so the most pythonic way to go around this is do:

if name in percentage:
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https://www.geeksforgeeks.org/python-get-dictionary-value-by-key
Python Get Dictionary Value by Key - GeeksforGeeks
WEBFeb 16, 2024 · Python Get Dictionary Value by Key Using get() Method. In this example, a sample dictionary named ` sample_dict ` is created with key-value pairs. The `get()` method is then used to retrieve the value associated with the key ‘ name ‘ safely, and the …
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  This code finds the key of a given value in a dictionary by using a list comprehension …
- Python Dictionary get() M…
  Syntax : Dict.get (key, default=None) Parameters: key: The key name of the …
- Get specific keys' values
  The map function can be used to extend the logic to whole dictionary and get function …
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How To Get Dictionary Value By Key Using Python
WEBJan 31, 2021 · 1. 2. myDict = {'one': 'Ram', 'two': 13, 'three': 'Jordge', 'four': 'Gill', 'five': 33, 'six': 'Steve'}; print(myDict.get("one")); Output. Ram. The above example finds the value of the key “one” of Dictionary in Python. …
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Most efficient method to get key for a value in a dict.
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You can write a list comprehension to pull o…
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I have a dataframe with 'key' and 'value' columns, I would like to input a ke…
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I made a function which will look up ages in a Dictionary and show the matching nam…
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mydict = {'george': 16, 'amber': 19} print mydict…
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getting the value of a key in python.
I used dictionaries here: percentage = {'a':75.5, 'b':73, 'c':78, 'd':68, 'e':6…
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How do I extract all the values of a specific key from a list of dictionaries?
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python - Get key by value in dictionary - Stack Overflow
WEBIf you want to find the key by the value, you can use a dictionary comprehension to create a lookup dictionary and then use that to find the key from the value. lookup = {value: key …
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mydict = {'george': 16, 'amber': 19} print mydict.keys()[mydict.values().index(16)] # Prints george Or in Python 3.x: mydict = {'george': 16, 'am...
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There is none. dict is not intended to be used this way. dictionary = {'george': 16, 'amber': 19} search_age = input("Provide age") for name, age...
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If you want both the name and the age, you should be using .items() which gives you key (key, value) tuples: for name, age in mydict.items():...
353
I thought it would be interesting to point out which methods are the quickest, and in what scenario: Here's some tests I ran (on a 2012 MacBook Pro...
127
one line version: (i is an old dictionary, p is a reversed dictionary) explanation : i.keys() and i.values() returns two lists with keys and va...
88
I found this answer very effective but not very easy to read for me. To make it more clear you can invert the key and the value of a dictionary....
48
a = {'a':1,'b':2,'c':3} {v:k for k, v in a.items()}[1] or better {k:v for k, v in a.items() if v == 1}
41
key = next((k for k in my_dict if my_dict[k] == val), None)
36
Try this one-liner to reverse a dictionary: reversed_dictionary = dict(map(reversed, dictionary.items()))
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getting the value of a key in python Dec 22, 2015
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Get a value from a dictionary by key in Python | note.nkmk.me
WEBAug 17, 2023 · In Python, you can get a value from a dictionary by specifying the key like dict[key]. d = {'key1': 'val1', 'key2': 'val2', 'key3': 'val3'} print(d['key1']) # val1. source: …
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WEBJul 5, 2023 · Value Retrieval Using the values() Method; Get Key-Value Pairs from a Dictionary Simultaneously; Key-Value Retrieval Using the items() Method; Using a For …
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How to get the value of a key in Python?To get the value of the key you want, you have to use the get() function using Python. The function requires a single argument which is the key in the dictionary. The below example contains 6 elements with both keys and the associated value of the dictionary. Use the method given below to get the value using the get () with Python.
How To Get Dictionary Value By Key Using Python - Tutorialdeep
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How to get keys from a dictionary by value in Python?This article explains how to get keys from a dictionary ( dict) by value in Python. To get a value from a dictionary by key, see the following article. You can get all the keys in a dictionary as a list using the list() function, since a dictionary iterates through its keys.
Get keys from a dictionary by value in Python | note.nkmk.me
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How to extract keys based on their values in Python?If you want to extract keys based on their values, see the following article. You can get all the values in a dictionary as a list using the list() function with the values() method. In Python, you can get a value from a dictionary by specifying the key like dict[key]. In this case, KeyError is raised if the key does not exist.
Get a value from a dictionary by key in Python | note.nkmk.me
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How to get all keys along with its value in Python?The most used method that can get all the keys along with its value, the “in” operator is widely used for this very purpose and highly recommended as it offers a concise method to achieve this task. Example: In the example below Python code prints the key-value pairs of a dictionary using the `in` operator.
Access Dictionary Values | Python Tutorial - GeeksforGeeks
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Python Dictionary get() - Programiz
WEBThe get() method returns the value of the specified key in the dictionary. Example. scores = { 'Physics': 67, . 'Maths': 87, 'History': 75 . } result = scores.get( 'Physics') print(result) …
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nkmk note
https://note.nkmk.me/en/python-dict-get-key-from-value
Get keys from a dictionary by value in Python | note.nkmk.me
WEBAug 20, 2023 · You can get all the keys in a dictionary as a list using the list() function, since a dictionary iterates through its keys. Iterate through dictionary keys and values in …
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Get Value for a Key in a Python Dictionary - Data Science Parichay
WEBFor a Python dictionary, you can get the value of a key using the [] notation. Alternatively, you can also use the dictionary get() function. The following is the syntax: # value …
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5 Best Ways to Get a Key From a Value in a Python Dictionary
WEBMar 11, 2024 · Problem Formulation: Working with Python dictionaries often involves retrieving a key based on a given value. The challenge is when you have a dictionary, …
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How to get a value for a given key from a Python dictionary?
WEBOct 31, 2023 · Get the value of a given key from the input dictionary by passing the key value to the input dictionary in [] brackets. print the resultant value for a given key. …
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Dictionaries in Python – Real Python
WEBd.clear () d.get (<key> [, <default>]) d.items () d.keys () d.values () d.pop (<key> [, <default>]) d.popitem () d.update (<obj>) Conclusion. Remove ads. Watch Now This …
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How to Find Key by Value in Python Dictionary | Delft Stack
WEBFeb 2, 2024 · Use .keys() and .values() to Find Key by Value in Python Dictionary. dict.keys() returns a list consisting keys of the dictionary; dict.values() returns a list …
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Value of Key in Dictionary Python
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https://stackoverflow.com/questions/45635242
How to get the key from value in a dictionary in Python?
WEBAug 11, 2017 · 2 Answers. Sorted by: 38. You can write a list comprehension to pull out the matching keys. print([k for k,v in a.items() if v == b]) answered Aug 11, 2017 at 12:29. …
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datagy
https://datagy.io/python-check-if-key-value-dictionary
Python: Check if a Key (or Value) Exists in a Dictionary (5
WEBSep 28, 2021 · You’ll learn how to do this using the in operator, the .get() method, the has_key() function, and the .keys() and .values() methods. Knowing how to work with …
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How to access a Dictionary Key by Index in Python | bobbyhadz
WEBApr 9, 2024 · main.py. my_dict = { 'id': 1, 'name': 'Bobbyhadz', 'age': 30, } . index = None if 'name' in my_dict: . index = list(my_dict).index('name') print(index) # 👉️ 1 . key = …
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python - get value by key from different column - Stack Overflow
WEBNov 7, 2021 · python - get value by key from different column. Asked 2 years, 6 months ago. Modified 2 years, 6 months ago. Viewed 6k times. 3. I have a dataframe with 'key' …
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WEBJan 5, 2024 · There are various ways to access items in the Dictionary or call dictionary value, we are explaining some generally used and easy methods we use for accessing …
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python - How do I extract all the values of a specific key from a list ...
WEBHow do I extract all the values of a specific key from a list of dictionaries? Asked 9 years, 9 months ago. Modified 9 years, 3 months ago. Viewed 45k times. 35. I have a list of …
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python - How to Split a string with Key-value pair - Stack Overflow
WEB5 days ago · If you are sure that the strings in the list are always of the same pattern; e.g. lettersDigits, you can do this using built-in regex library re. import re. # Given list of …
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getting the value of a key in python	Dec 22, 2015
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