test if key in dict python code example

Example 1: check if dict key exists python

d = {"key1": 10, "key2": 23}

if "key1" in d:
    print("this will execute")

if "nonexistent key" in d:
    print("this will not")

Example 2: check if is dictionary

isinstance(df, pd.DataFrame)
isinstance(df, dict)
isinstance(df, list)

Example 3: python check if key exists

# You can use 'in' on a dictionary to check if a key exists
d = {"key1": 10, "key2": 23}
"key1" in d
# Output:
# True

Example 4: how to know if a key is in a dictionary python

dict = {"key1": 1, "key2": 2}

if "key1" in dict:

Example 5: check if dict key contains specific key and value

if (key, value) in d.items():
	print("yes")