Answers for "how to get a key from a dictionary python"

5

how to get the key for a value in a dictionary in python

# function to return key for any value 
def get_key(val): 
    for key, value in my_dict.items(): 
         if val == value: 
             return key 
  
    return "key doesn't exist"
  
# Driver Code 
  
my_dict ={"java":100, "python":112, "c":11} 
  
print(get_key(100)) 
print(get_key(11))
Posted by: Guest on June-12-2020
14

python get dictionary keys

# To get all the keys of a dictionary use 'keys()'
newdict = {1:0, 2:0, 3:0}
newdict.keys()
# Output:
# dict_keys([1, 2, 3])
Posted by: Guest on February-21-2020
5

how to get key of a particular value in dictionary python using index

mydict = {'george': 16, 'amber': 19}
print(list(mydict.keys())[list(mydict.values()).index(16)])  # Prints george
Posted by: Guest on June-21-2020
1

python get keys and values from dict

# using dict.items() to
# get key and value
print ("Dict key-value are : ")
for key, value in test_dict.items():
    print (key, value)
Posted by: Guest on May-13-2021
7

get() python

# The get() method on dicts
# and its "default" argument

name_for_userid = {
    382: "Alice",
    590: "Bob",
    951: "Dilbert",
}

def greeting(userid):
    return "Hi %s!" % name_for_userid.get(userid, "there")

>>> greeting(382)
"Hi Alice!"

>>> greeting(333333)
"Hi there!"

'''When "get()" is called it checks if the given key exists in the dict.

If it does exist, the value for that key is returned.

If it does not exist then the value of the default argument is returned instead.
'''
# transferred by @ebdeuslave
# From Dan Bader - realpython.com
Posted by: Guest on April-13-2020
-3

find key by value python

print(list(d.keys())[list(d.values()).index(990)])
Posted by: Guest on May-04-2020

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