Python's Built-in Methods ChangeCase.py 1 2 ChangeCase. py 3 Input: 4 Output: Uppercase and lowercase versions of the user-entered string- This program converts a string to lowercase and uppercase. Summary Interactive In this lab, you complete a partially written Python program that includes built-in methods that 5 convert Strings to all uppercase or all lowercase. 6 7 sample = input ("Enter a string or done when you want to quit: ") The program prompts the user to enter any string. To end the program, the user can enter "done". For each string entered, call the built in methods lower() and upper (). The program should 9 while sample != "done": 10 # Call the lower method here and print the result. call these methods using a string object, followed by a dot (. ). followed by the name of the 1 method. Both of these methods return a string with the string changed to uppercase or lowercase. Here is an example: print("Lowercase: " + result) # Call upper method here and print the result. 12 13 14 print("Uppercase: " + result) sample = input ("Enter a string or done when you want to quit: ") 15 16 sample = "This is a String." 17 result = sample.lower(); result = sample.upper(); The source code file provided for this lab includes the necessary input and output statements. Comments are included in the file to help you write the remainder of the program. Instructions 1. Make sure the file ChangeCase.py is selected and open. 2. Write the Python statements as indicated by the comments. 3. Execute the program by clicking on the Run button at the bottom of the screen.

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Complete the code where it says Your code here. When you are done enter ONLY the code you added in the text box below. The program reads the phone number prefix in, then it reads in the string suffix. Output 1-800-, the prefix, a dash, and the suffix. End with a newline. Example output if the input is: 224 HELP 1-800-224-HELP #include #include using namespace std; int main() { int prefix; string suffix; cin >> prefix; cin >> suffix; * Your code here */ return 0; }

please code in python A tweet is a string that is between 1 and 280 characters long (inclusive). A username is a string of letters and/or digits that is between 1 and 14 characters long (inclusive). A username is mentioned in a tweet by including @username in the tweet (notice the username does not include the @ symbol). A retweet is way to share another user's tweet, and can be identified by the string RT, followed by the original username who tweeted it. Your job is to fill in the function count_retweets_by_username so that it returns a frequency dictionary that indicates how many times each retweeted username was retweeted.tweets = ["This is great! RT @fakeuser: Can you believe this?",         "It's the refs! RT @dubsfan: Boo the refs and stuff wargarbal",         "That's right RT @ladodgers: The dodgers are destined to win the west!",         "RT @sportball: That sporting event was not cool",         "This is just a tweet about things @person, how could you",         "RT…