Create a dictionary called low_d that keeps track of all the characters in the string p and notes how many times each character was seen. make sure that there are no repeats of characters as keys, such that “t” and “t” are both seen as a “t” for example.

from collections import defaultdict #importing defaultdict

low_d=defaultdict(int)#declaring an empty dictionary

string=str(input("Enter your string \n"))#taking input of the string...

for i in string:#iterating over the string..

   low_d[str.lower(i)] += 1 #adding the character in lowercase and increasing it's count..

for key,value in low_d.items():#iterating over the dictionary.

   print(key+":"+str(value))#printing the key value pair..

Output:-

Enter your string  

ramaranR

n:1

m:1

a:3

r:3

Explanation:

I have declared an empty dictionary using defaultdict then I have ask the user to input the string.Then I iterated over the string and added each character to the dictionary and updated it's count.Then printing the characters and their frequency.

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)

answer ingress;