python dict remove key

''' 
Deleting an entry from dictionary using del 
'''
# If key exist in dictionary then delete it using del.
if "at" in wordFreqDic:
    del wordFreqDic["at"]
    
print("Updated Dictionary :" , wordFreqDic)      

my_dict.pop('key', None)

my_dict = {31: 'a', 21: 'b', 14: 'c'}

del my_dict[31]

print(my_dict)

if 'key' in my_dict:
    del my_dict['key']

# Python code to demonstrate
# removal of dict. pair 
# using del
  
# Initializing dictionary
test_dict = {"Arushi" : 22, "Anuradha" : 21, "Mani" : 21, "Haritha" : 21}
  
# Printing dictionary before removal
print ("The dictionary before performing remove is : " + str(test_dict))
  
# Using del to remove a dict
# removes Mani
del test_dict['Mani']
  
# Printing dictionary after removal
print ("The dictionary after remove is : " + str(test_dict))
  
# Using del to remove a dict
# raises exception
del test_dict['Manjeet']