from collections import defaultdict
my_list = ["python is best for coders", "python is fun", "python is easy to learn"]

print("The list is :")
print(my_list)

my_temp = defaultdict(int)

for sub in my_list:
   for word in sub.split():
      my_temp[word] += 1

result = max(my_temp, key=my_temp.get)

print("The word that has the maximum frequency :")
print(result)

The list is :
['python is best for coders', 'python is fun', 'python is easy to learn']
The word that has the maximum frequency :
python