How do I read a text file into a list in Python?

Posted on by Muna Meyer

How do I read a text file into a list in Python?

Use file. readlines() to read a text file into a list

  1. my_file = open(“sample.txt”, “r”)
  2. content_list = my_file. readlines()
  3. print(content_list)

How do you read a file in Python and store it in a list?

How to read a file to a list and write a list to a file in Python

  1. file = open(“sample1.txt”, “r”) Read from `file`
  2. file_lines = file. read()
  3. list_of_lines = file_lines. split(“\n”)
  4. print(list_of_lines)
  5. with open(“sample2.txt”, “w”) as file: Write to `file`
  6. file_lines = “\n”. join(list_of_lines)
  7. file. write(file_lines)

How do I read a text file into an array in Python?

“how to convert text file to array in python” Code Answer’s

  1. def readFile(fileName):
  2. fileObj = open(fileName, “r”) #opens the file in read mode.
  3. words = fileObj. read(). splitlines() #puts the file into an array.
  4. fileObj. close()
  5. return words.

How do you read a csv file in a list in Python?

How to read a csv file into a list in Python

  1. file = open(“sample.csv”, “r”)
  2. csv_reader = csv. reader(file)
  3. lists_from_csv = []
  4. for row in csv_reader:
  5. lists_from_csv. append(row)
  6. print(lists_from_csv) Each row is a separate list.

How do I open and read a file in one line Python?

To do that, first, open the file using Python open() function in read mode. The open() function will return a file handler. Use the file handler inside your for-loop and read all the lines from the given file line by line. Once done,close the file handler using close() function.

How do you write a list to a file in Python?

Use file. write() to write a list to a file

  1. a_list = [“abc”, “def”, “ghi”]
  2. textfile = open(“a_file.txt”, “w”)
  3. for element in a_list:
  4. textfile. write(element + “\n”)
  5. textfile.

How do I read a list of numbers in a file in Python?

Python program to read all numbers from a file:

  1. File name is given. Open the file in read mode.
  2. Read all lines of the file.
  3. Iterate through the lines one by one.
  4. For each line, iterate through the characters of that line.
  5. Check for each character, if it is a digit or not. If it is a digit, print the number.

How do I read a text file into a list?

You can read a text file using the open() and readlines() methods. To read a text file into a list, use the split() method. This method splits strings into a list at a certain character.

How to read the contents of a file in Python?

The simplest way to do it A simple way is to: Read the whole file as a string Split the string line by line In one line, that would give: lines = open(‘C:/path/file.txt’).read().splitlines() However, this is quite inefficient way as this will store 2 versions of the content in memory (probably not a big issue for small files, but still).

How do I list the contents of a directory in Python?

Python now supports a number of APIs to list the directory contents. For instance, we can use the Path.iterdir, os.scandir, os.walk, Path.rglob, or os.listdir functions. os.listdir () method gets the list of all files and directories in a specified directory.

How to get only txt files in a directory in Python?

os.listdir () method gets the list of all files and directories in a specified directory. By default, it is the current directory. Program 2: To get only txt files. OS.walk () generates file names in a directory tree. os.scandir () is supported for Python 3.5 and greater.

How to read a list of lines in Python?

Using readlines () Method. The readlines () method can also be used directly to read lines and store them into a list in python. The code for the same will look as below: file = open (“./readfile.txt”) lines = file.readlines () file.close () print (lines) 1. 2.