I need help understanding what this code does, line by line. for file in id_list: com_df_list=[]subfolders = [f.path for f in os.scandir(source_dir) if f.is_dir() ] for dirr in subfolders:file_loc = dirr +"/"+ file.strip()+input_end# print(file_loc)df = pd.read_csv(file_loc) com_df_list.append(df)

I need help understanding what this code does, line by line. for file in id_list: com_df_list=[]subfolders = [f.path for f in os.scandir(source_dir) if f.is_dir() ] for dirr in subfolders:file_loc = dirr +"/"+ file.strip()+input_end# print(file_loc)df = pd.read_csv(file_loc) com_df_list.append(df)

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter7: File Handling And Applications

Section: Chapter Questions

Problem 15RQ

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Please Explain your work and this should be in "C Language" and this is a data structure subject Thank you!
In C++ Stuck and could use help with coding a loop to find the array location of each source node inside the file input loop in main(). Use get_value() to compare a node’s value to source_name and If the node does not exist, add it to the array using the set_value() function and incrementing n. Save index. Comment out the output lines in the file input loop in main(). Sample Run Enter file name: Data.txt Sunday Monday Tuesday Wednesday Thursday Friday Note that Saturday is not shown Node.h // Node Declarations #define ERR -1 #define NODE_MAX 20 #define EDGE_MAX 4 // Node class class node { public: node(); // Constructor void set_value(string); // Set string value string get_value(); // Return string value void connect(node *); // Connect this node to another void put(ostream &); // Output node and neighbors private: string value; // Node value node *edge[EDGE_MAX]; // Edges array }; Node.cpp #include…
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We have to write Code in C language with the help of Linked list That perform following tasks . Search and display the contents of file based on name, age and salary of employees. Sort the data in ascending order based on the name (alphabetical order), age or salaryof employees.Edit the records and write the updated records back on the file.The file is in text mode, the user should be able to save this file (with a different name) in the binary mode.
using c++ create a linked list so that the linked list can read content from a binary file and write the list back to a binary file. The binary file to read should look something like this: 9 -3 5 2 6 8 it should have a list of integers to read into your linked list, NOT a list of commands like: L1.insertTail(5);
in c++ A frequency table lists words and the number of times each word appears in a text file.Write a program that creates a frequency table for a file whose name is entered by theuser. You can use a map of string-int pairs. You may want to use the C library functionispunct() (in header file CTYPE.H) to check for punctuation so you can strip it off theend of a word, using the string member function substr(). Also, the tolower() functionmay prove handy for uncapitalizing words.
Needing help with TODO task 1 in python. My input for TASK 1 was: import datetime def load_phone_calls_dict(data_dir):phone_calls_dict={}for file in os.listdir(data_dir):if file.startswith('phone_calls_') and file.endswith('.txt'):with open(file) as f:lines=[line.rstrip() for line in f]for l in lines:date,time,phone=l.split()timestamp=data+' '+timeareacode=phone[3:6]format = '%b %d %Y %I:%M%p'datetime_var = timestamp.datetime.strptime(date_time,format)midnighttime=datetime.datetime(2000, 1, 1, 00, 00, 00)sixamtime=datetime.datetime(2000, 1, 1, 00, 00, 00)if(datetime_var.time()>=midnighttime.time() and datetime_var.time()<=sixamtime.time()):if areacode in phone_calls_dict:if phone in phone_calls_dict[areacode]:phone_calls_dict[areacode][phone].append(datetime_var)else:phone_calls_dict[areacode][phone]=[datetime_var]else:phone_calls_dict[areacode][phone]=[datetime_var]return phone_calls_dictimport datetime When I try to submit the error comes up: line 23, in…
from typing import TextIOdef allergy_checker(shopping_lists: TextIO, clean_shopping_lists: TextIO, allergies: list[str]) -> None: '''shopping_lists is a file open for reading that has at least one food name on everynon-blank line. Food names are separated by a space.Each line in shopping_lists ends with a newline character.clean_shopping_lists is a file open for writing.allergies is a list of one-word food names.Copy lines from shopping_lists to clean_shopping_lists.For each food name that is in the allergies list, replaces it with 'REMOVED'.If a blank line in shopping_lists is reached, stop reading the file.'''shopping_lists = open(shopping_lists) # Line 1clean_shopping_lists = open(clean_shopping_lists, 'w') # Line 2line = shopping_lists.readline() # Line 3while line.strip(): # Line 4line = shopping_lists.readline()…
The stream insertion operator << and the stream extraction operator >> are overloadedto handle all standard data types—including strings and memory addresses (stream insertion only)—and all user-defined data types T/F
Part Two: Implementing a rainbow table You are to write a program, in C/C++, Java or Python, that should run using the following instruction: $ ./Rainbow Passwords.txt where the file Passwords.txt contains a list of possible passwords. The password file contains a password per line, as in the provided words file and consists of strings of printable characters. Any password used must be taken from this file, so the only stored hash information needs to relate to those entries in the file. The program is used to find pre-images for given hash values. Rainbow tables can be used to solve pre-image problems for hash functions. At the simplest level they can simply be a list of hash values and the corresponding pre-images, often from some dictionary. This can be expensive in terms of storage space however, and a more efficient way of identifying pre-images involves the use of the hash function and reduction functions. First step The process is as follows: 1. Read in the list of possible…
Computer Science Write a C/C++ program, call it findExt, to find all files in a directory hierarchy, whose extensions are in the extension list provided as arguments to the program. Your program should print the whole pathnames of the found files. Synopsis: findExt <extension-list> [-t target-directory] When target-directory is missing, the working directory (./) will be the target directory Some sample runs: $ findExt txt pdf That is, find all files whose extensions are either txt or pdf in the directory hierarchy ./ $ findExt jpg -t $HOME //target directory is home directory That is, find all files whose extensions is jpg in the directory hierarchy $HOME Requirement: - You must use the system call nftw() that allows you to walk across a file tree. This system call will do all the recursive walk and each time it visits a file or a directory, it will call your own function (a function that you pass as a parameter).
In C++, how do I read a file with numbers Such as 1,2 3,4 5,6 and place it into a linked list with x,y values Without stringstream or sstream and vectors