my_string = "Python-Interpreter"

print ("The string is : ")
print(my_string)

max_frequency = {}
for i in my_string:
   if i in max_frequency:
      max_frequency[i] += 1
   else:
      max_frequency[i] = 1
my_result = max(max_frequency, key = max_frequency.get)

print ("The maximum of all characters is : ")
print(my_result)

The string is :
Python-Interpreter
The maximum of all characters in Python-Interpreter is :
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