Write a regular expression to search .dat file (s) having starting character "p" and ending with "zw". Justify RE with example (s).
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- Recursion and loops. Provide both recurrent and loop based implementation of the function count( e, L ) that returns the number of es in L, where L is a list. Also consider cases when L is an empty list. Create test cases and run driver, show how function runs in spyder (py file) or ipynb file. Submit code as a py or html or pdf files with screenshots of the runs.In this task, we would like for you to appreciate the usefulness of the groupby() function of itertools . To read more about this function, Check this out . You are given a string . Suppose a character '' occurs consecutively times in the string. Replace these consecutive occurrences of the character '' with in the string. For a better understanding of the problem, check the explanation. Input Format A single line of input consisting of the string . Output Format A single line of output consisting of the modified string. Constraints All the characters of denote integers between and . Sample Input 1222311 Sample Output (1, 1) (3, 2) (1, 3) (2, 1) Explanation First, the character occurs only once. It is replaced by . Then the character occurs three times, and it is replaced by and so on. Also, note the single space within each compression and between the compressions.Complete the function getLetterFrequency() to return a list containing the number of times each letter of the alphabet occurs in the string passed to it. The Oth index corresponds to the letter "a" or "A", the 1st corresponds to the letter "b" or "B", ..., the 25th corresponds to "z" or "Z". You should ignore any non-alphabet characters that occur in the string. But make sure that both lowercase and uppercase letters contribute to the same count. You must use the ord() function to convert letters into indexed based values. Note that you can offset a number by ord("a") or ord("A") to get the index that you need. You should use at least some of the (or all of) following string methods: • isalpha() lower() • upper() • isupper() • islower() and the following string functions: ord() len()
- Using a csv file attached (https://file.io/NMvbdnv4E3r0), Create a program on python that use the csv file. The program should accept a user's input of a compound. It should output the molar mass (in 2 decimal places only) of the compound.by using the csv file to compute for the atomic mass at name of the elements. Furthermore, if the "elements involved" are wrong an invallid message should be outputted and only existing chemical symbols are the output. The same goes for wrong input of the "number of atoms" wherein a wrong an invallid message should be outputted and only integers are to be inputted by the user. Program should look like this: Enter compound: C6H12O6 Enter elements involved: C,H,O Enter no. of Carbon atoms: AA Enter no. of Hydrogen atoms: 12 Enter no. of Oxygen atoms: 6 Wrong input of number of atoms! Try again. or Enter compound: C6H12O6 Enter elements involved: C,H,O Enter no. of Carbon atoms: 6 Enter no. of Hydrogen atoms: 12 Enter no. of Oxygen atoms: 6…Allow student to insert one arbitrary string. Save the letters of the string into a list. Design and perform the following tasks and display your results: • Summarizing letters in a string. Write a function that receives a string and returns a list of tuples containing the unique letters and their frequencies in the string. Test your function and display each letter with its frequency. Your function should ignore case sensitivity (that is, 'a' and 'A' are the same) and ignore spaces and punctuation. When done, write a statement that says whether the string has all the letters of the alphabet. • Present descriptive statistics and graphs about the string data. • Sorting letters in different order and removing duplicates • Write a code that produces anagrams of a given string. An anagram of a string is another string formed by rearranging the letters in the first. program must accept inputs from a user, performs an operation using a userdefined function which will accept parameters and…Computer Science Download the template program palindrome.c and the input data file data11.txt. Fill out the function palindrome() to determine if the passed string is a palindrome (a string that reads the same forward and backward). Return 1 from the function if it was passed a palindrome and 0 otherwise. Fill out the function newPalindrome() to allocate an instance of the given Palindrome structure and return it. Fill out the delPalindrome() function to free an instance of the Palindrome structure. Fill out the main program to read the data11.txt file from stdin. It has one word per line. Test each input to determine if it is a palindrome. If it is, save it in a new Palindrome instance, and chain it in a list of palindromes. At the end display a palindrome count, a line count, and the list of palindromes. The two output lines should look like (with the missing counts and palindromes filled in): There are __ palindromes in the ____ line input file anna, ... , aga Don't forget to…
- Implement the GetNumOfNonWSCharacters() function. GetNumOfNonWSCharacters() has a constant string as a parameter and returns the number of characters in the string, excluding all whitespace. Call GetNumOfNonWSCharacters() in the PrintMenu() function. Ex: Number of non-whitespace characters: 181what is missing from the blank in the following?Q3. Write for-loops and while-loops to:(a) Compute the mean of every column in mtcars.(b) Create an object to store unique values in each column of iris. (Hint: Use function unique()) Theobject could be whatever object you like, list, matrix, dataframe, etc.
- Trace the match_pattern module (including match_segment) for the pattern and input given below; >>> match ( '?*actor have been ?*action the ?*object from ?*duration', 'students of BSCS-6 have been watching the AI videos from last 16 weeks'))String replacement is read from input. Then, sentence is read from input. If replacement is in sentence, then: Output 'Located at index: ' followed by the index of the last occurrence. Create a string from sentence with the first two occurrences of replacement replaced by '5' and output sentence on a newline.implement the Viterbi algorithm in Python. Your task is to write codefor the following prototype:def Viterbi(A,B,Pi,O) Returning Viterbi score and best path2. Calculate the Viterbi score and the Best path of the first two vectorsdescribed in part 1 of this assignment by hand. Show your work.3. Create an observation vector of at least 7 elements.4. Use the observation vectors and results calculated in 2. and 3. above totest your implementation of the Viterbi algorithm