Python program to count the occurrences of each word in a given sentence.py

def word_count(str):  
    counts = dict()  
    words = str.split()  
  
    for word in words:  
        if word in counts:  
            counts[word] += 1  
        else:  
            counts[word] = 1  
  
    return counts  
  
print( word_count('the quick brown fox jumps over the lazy dog.'))