Showing posts with label Python Coding Examples. Show all posts
Showing posts with label Python Coding Examples. Show all posts

Sunday, 11 June 2023

What is the difference between “=” and “==” in python?

The difference between "=" and "==" in Python is that "=" is an assignment operator, while "==" is an equality operator.


The assignment operator "=" is used to assign a value to a variable. For example, the following code assigns the value 5 to the variable x:


x = 5


The equality operator "==" is used to compare two values and see if they are equal. For example, the following code checks if the values of x and y are equal:


x == y


If the values of x and y are equal, the expression will evaluate to True. Otherwise, it will evaluate to False.


It is important to note that "=" and "==" are not interchangeable. Using "=" in a situation where "==" is expected will cause a syntax error.


Here are some examples of how "=" and "==" can be used in Python:


# Assign the value 5 to the variable x

x = 5


# Check if the values of x and y are equal

if x == y:

  print("x and y are equal")

else:

  print("x and y are not equal")


I hope this helps! Let me know if you have any other questions.

Friday, 9 June 2023

How do I shuffle a directory in Python?

To shuffle a directory in Python, you can use the following code:


```python

import random


def shuffle_directory(directory):

  """Shuffles the contents of a directory.


  Args:

    directory: The directory to shuffle.


  Returns:

    None.

  """


  # Get the list of files in the directory.

  files = os.listdir(directory)


  # Shuffle the list of files.

  random.shuffle(files)


  # Iterate over the shuffled list of files and move them to a new directory.

  for file in files:

    os.rename(os.path.join(directory, file), os.path.join(directory, "shuffled", file))


```


This code will first get the list of files in the directory. It will then shuffle the list of files using the random.shuffle() function. Finally, it will iterate over the shuffled list of files and move them to a new directory called "shuffled".


Here is an example of how to use the shuffle_directory() function:


```python

# Create a directory to shuffle.

directory = "/tmp/shuffle"


# Create some files in the directory.

for i in range(10):

  file = "file_" + str(i) + ".txt"

  with open(os.path.join(directory, file), "w") as f:

    f.write("This is file " + str(i) + ".")


# Shuffle the directory.

shuffle_directory(directory)


# Check the contents of the shuffled directory.

for file in os.listdir(directory):

  with open(os.path.join(directory, file), "r") as f:

    print(f.read())

```


This code will create a directory called "/tmp/shuffle" and create 10 files in it. It will then shuffle the directory and print the contents of the shuffled directory. The output of this code will be a random order of the 10 files.