How do I read in a specific row in a CSV file in Python without using pandas, list, or enumerate functions? For example, how do I ask to read row 10 in the file, and then ask for row 50, row 20 or row X?

How do I read in a specific row in a CSV file in Python without using pandas, list, or enumerate functions? For example, how do I ask to read row 10 in the file, and then ask for row 50, row 20 or row X?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I have a dictionary that comprises of numerous volumes, each of which is a book, on my bookcase of paper books. A-E is covered by one, F-J by another, K-M by another, and so on. I look at the alphabetic ranges to get the proper loudness to discover a word. Then I turn to the appropriate page by using the ranges at the top of each page. After that, I look for the word on the page.
The grayscale2 function is already written, you just need to write inside it how to convert an image to grayscale using the crude average of RGB: from images import Image def grayscale1(image): """Converts an image to grayscale using the psychologically accurate transformations.""" for y inrange(image.getHeight()): for x inrange(image.getWidth()): (r, g, b) = image.getPixel(x, y) r = int(r * 0.299) g = int(g * 0.587) b = int(b * 0.114) lum = r + g + b image.setPixel(x, y, (lum, lum, lum)) def grayscale2(image): """Converts an image to grayscale using the crude average of the r, g, and b""" pass def main(): filename = input("Enter the image file name: ") image = Image(filename) grayscale2(image) image.draw() if __name__ == "__main__": main()
The function find_max_char takes one string parameter, mystr. The function returns the character in mystr with the maximum ordinal value (the character that comes last in the ASCII alphabet, relative to the other characters in mystr). However, if mystr is the empty string, the function returns the Python object None. Notice that we don't need the ord() function to compare ordinal values; we can use comparison operators. For example, "Z" > "C" is true because Z comes after C in the ASCII alphabet. We need to "accumulate" the correct answer (max_char) and then return it: First, if mystr is empty, return None Then initialize max_char (accumulator variable) to the first character in mystr Use a for loop to iterate ch over the characters in mystr Each time a new maximum character is found (if ch > max_char), max_char is updated to "remember" that the new maximum is ch Finally, return max_char For example: Test Result print(find_max_char("naproxen")) x…
Write a program that reads words from a file (filename given as a string parameter) and prints the occurance of each word(case insensitive). And print the words in alphabetical order. For example, if the file contains text Love is free free is love then the function should print free:2 is:2 love:2 def count_word(filename): # YOUR CODE HERE raise NotImplementedError()
I need the answer as soon as possible
Please use python and python file i/o to solve the problem. Create an input file input3_1.txt as shown below, solve the problem and print the output to output3_1.txt file as shown in the question. Input: The first line contains two integers N and M (1
Define a function named get_encrypted_list (word) which takes a word as a parameter. The function returns a list of characters. The first element is the first letter from the parameter word and the rest is as a sequence of '*', each '*' representing a letter in the parameter word. Note: you can assume that the parameter word is not empty. For example: Test Result ['h', '*', **1 guess = get_encrypted_list('hello') print(guess) print (type (guess)) guess = get_encrypted_list('succeed') ['s', '*', print (guess) **¹, ¹*¹] **']
Define a function named check_guess (generated_word, encrypted_list, letter) which takes a word, a list of characters and a letter as parameters. The function loops through each letter in the generated_word. If the letter is equal to the parameter letter, the function replaces the "*" character in the corresponding position in the encrypted_list with the parameter letter. For example: Test Result ['h', '*¹ ['h', '*', ¹*¹ data = ['h', '*', '*', '*', '*'] **', 'o'] 'o'] check_guess('hello', data, 'o') print (data) check_guess('hello', data, 'a') print (data) data = ['s', '*', '*', '*', '*', '*', '*'] ['s', '*', check_guess('succeed', data, 'a') ['s', '*', print (data) check_guess('succeed', data, 'c') print (data) 1X¹ **'] ***]
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…
write a python code named get_total_cases() takes the a 2D-list (similar to database) and an integer x from this set {0, 1, 2} as input parameters. Here, 0 represents Case_Reported_Date, 1 represents Age_Group and 2 represents Client_Gender (these are the fields on the header row, the integer value represents the index of each of these fields on that row). This function computes the total number of reported cases for each instance of x in the text file, and it stores this information in a dictionary in this form {an_instance_of_x : total_case}. Finally, it returns the dictionary and the total number of all reported cases saved in this dictionary. (Suppose we want to know the total number of cases reported on each date, so use x = 0.) >>> result, total_cases = get_total_cases(database, 0) >>> display_dict(result) 2021-05-19: 8 2021-05-20: 2 2021-05-21: 1 2021-05-22: 1 >>> print(total_cases)
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.
python help... Write a function justVowels() that takes a string as a parameter and returns a new string that contains all the vowels found in the parameter string. The vowels in the returned string should appear in the same order as they did in the parameter string. A vowel is one of a, e, i, o, or u. both the upper- and lower-case vowels should be included. The characters in the returned string should have the same capitalization as they did in the parameter string. If the function is given a string without any vowels or an empty string, it should return the empty string. Use the if-else condition with iterate loop pattern. Don’t forget to include the docstring and comments. How it should run... >>> justVowels('Did you include your collaboration statement') 'iouiueouoaoaioaee' >>> justVowels('If you did not include your collaboration statement no points') 'Iouioiueouoaoaioaeeooi' >>> justVowels('1,2,3,4,...') '' >>> justVowels('') ''