python dict get key code example

Example 1: 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])

Example 2: 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))

Example 3: 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

Example 4: get function in dictionary

#The get() method in  dictionary returns:
#the value for the specified key if key is in dictionary.
#None if the key is not found and value is not specified.
#value if the key is not found and value is specified.
# value is provided
print('Salary: ', person.get('salary', 0.0))

Example 5: python get dictionary keys

d = {2:"hello"}
d.values()

Example 6: find key by value python

print(list(d.keys())[list(d.values()).index(990)])