Beautiful Python Code

The exec() function in Python is used to execute a dynamically generated code, which is a code that is created or modified at runtime. The exec() function takes a string or an object that contains a valid Python code and executes it as if it was written in a file. You can also pass a dictionary of global and local variables to the exec() function to modify the execution environment. Here are some examples of using exec() in Python: Execute a Python statement stored as a string: code = 'print("Hello, world!")' exec(code) Output: Hello, world! In this example, exec(code) executes the Python statement 'print("Hello, world!")', which prints the string "Hello, world!" to the console. Use exec() to execute a Python script stored in a file: with open('script.py', 'r') as file:     code = file.read() exec(code) In this example, we open the file 'script.py', read its contents into a string, and then use exec() to execu...

The eval() function in Python is used to evaluate a string or an object that contains a valid Python expression, which is a code that returns a value. The eval() function takes a string or an object that contains a valid Python expression and evaluates it as if it was written in a file. You can also pass a dictionary of global and local variables to the eval() function to modify the evaluation environment. Here are some examples of using eval() in Python: Evaluate a mathematical expression stored as a string: result = eval('3 + 4 * 2') print(result) Output: 11 In this example, eval('3 + 4 * 2') evaluates the mathematical expression '3 + 4 * 2' and returns the result (11). Note that eval() can be dangerous if used improperly, as it allows arbitrary code execution. You should only use eval() with trusted input. Evaluate a Python expression that references variables in your program: x = 5 y = 10 result = eval('x * y') print(result) Output: 50 In this...

The divmod() function in Python is used to find the quotient and remainder of dividing two numbers. The divmod() function takes two numbers as arguments and returns a tuple containing the quotient and remainder as (quotient, remainder). The numbers can be integers or floats, but they must be non-complex. Here are some examples of using divmod() in Python: Divide two numbers and get the quotient and remainder: >>> divmod(10, 3) (3, 1) In this example, divmod(10, 3) divides 10 by 3, and returns a tuple containing the quotient 3 and the remainder 1. Calculate the number of hours and minutes in a given number of minutes: >>> total_minutes = 135 >>> hours, minutes = divmod(total_minutes, 60) >>> print(hours, "hours", minutes, "minutes") 2 hours 15 minutes In this example, we start with a total number of minutes (135) and use divmod(total_minutes, 60) to calculate the number of hours and minutes. The divmod() function returns a tu...

The dir() function in Python is used to get a list of attributes and methods of an object. The dir() function takes an object as an argument and returns a list of strings containing the names of its attributes and methods. The object can be any Python data type or user-defined class. Here are some examples of using dir() in Python: Get all the attributes and methods of a built-in Python object:  >>> dir(list) ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr_...

Python enumerate() is a built-in function that returns an enumerate object. It allows you to loop over a collection (such as a list, tuple, string, etc.) and keep track of the index and value of each element. You can use it in for loops or convert it to a list or dictionary. Here are some examples of how to use Python enumerate() : To print the index and value of each element in a list: Iterate over a list and print the index and value of each item: fruits = ['apple', 'banana', 'cherry'] for index, fruit in enumerate(fruits):     print(index, fruit) Output: 0 apple 1 banana 2 cherry 0 apple 1 banana 2 cherry In this example, enumerate(fruits) returns an iterator that produces tuples containing the index and value of each item in the list. We use a for loop to iterate over this iterator and print the index and value of each item. Create a dictionary that maps the index of each word in a list to the word itself: words = ['foo', 'bar', 'baz...