python how to check if key in dict code example

Example 1: python how to check if a dictionary key exists

if word in data:
  return data[word]
else:
  return "The word doesn't exist. Please double check it."

Example 2: contanskey in python

d = {
  "a": 1,
  "b": 2
}

# To check if key is there in the dictionary
if "a" in d:
  print("Found")