Python Empty Tuple | Explained
To create an empty tuple, the “tuple()” function and empty parentheses are used in Python. For instance, “()” represents an empty tuple.
To create an empty tuple, the “tuple()” function and empty parentheses are used in Python. For instance, “()” represents an empty tuple.
The “if-else” statement executes a block of code based on the specified condition. If the specified condition is true, then the if block will execute
To reverse the list element, the “reverse()” method is used in Python. The “reversed()” function also accepts the list and returns the reversed iterable object.
To sort the elements of a list in ascending or descending order, the “sort()” method and “sorted()” function is used in Python.
The “replace()” method in Python replaces the old substring value with a new substring value. By default, it will replace all the occurrences of a substring.
“while” loop executes the block of code until the condition remains “True”. It iterates infinite times if the increment/decrement value is not defined.
To sort a list of strings, the“sort()” and “sorted()” functions are used in Python. The sorting of data also varies using the key and reverse parameters
In Python, the “math.log10()” function of the “math” module is used to calculate the logarithm of a given positive number to base 10.
In Python, the hexadecimal to decimal conversion is carried out using the inbuilt “int()” function, “literal_eval()”, “while” loop, and “dictionary”.
In Python, an inbuilt “input()” function is used to take the user input value and returns it in the form of a string by default.
To clear all the items of the dictionary, the “dict.clear()” function is used in Python. “del” keyword deletes the dictionary rather than just the items in it.
To convert float to int, the inbuilt functions such as “int()”, “math.floor()”, “math.ceil()”, “round()”, and “math.trunc()” are used in Python.
To convert integers into a string, the inbuilt “str()” function, “.format()” function, “f-string” method and “%s” operator are used in Python.
In Python, an inbuilt “len()” function, the “for loop”, and the “length_hint()” function is used to find the length of the list.
In Python, “string slicing”, “re.sub()”, “replace()”, and “List Data Structure” methods replace characters at a specific position of the string.
In Python, the “for” loop iterates on the range() function and operates on each element. The “range()” function must have a “stop” argument value
To create a new file in python, the open() function is used. It accepts two parameters: the complete path and the “x” character.
The “dict.keys()”, “List Comprehension”, “for loop with append()”, “Unpacking with *” and “itemgetter()“are used to convert dictionary keys to lists.
The “str()” function is used to return any input data type as a string. Data types, such as list, dict, etc., can be converted into a string using this function.
In Python, the index number is used to access the items of a Python tuple. The items of tuples are accessed individually and in the form of ranges.
In Python, the “len()” function, “not” operator, “not with strip()” and “not with isspace()” methods are used to check if the string is empty
In Python, the “len()” function, the “for loop with isinstance() function”, and the recursive function are used to calculate the dictionary’s length.
The “OR” operator in Python “if statement” is used to combine multiple conditions and filter out the information based on the specified conditions.
In Python, the “math.log2()” function of the “math” module returns the logarithm of the number to base 2. The input number must be greater than zero.
In Python, the “rand()”, “randint()”, and “np.empty()” functions create “1-D”, “2-D”, and “3-D” arrays with different random values.
In Python, the “np.dot()” function of the “Numpy” package is used to calculate the dot product of scalar, vectors, 1-D, and 2-D arrays.
In Python, the “cv2.imread()” function is used to read the image from the specified file. The image is displayed using another function, “cv2.imshow()”.
In Python, the “re.findall()” function of the “regex” module returns the non-overlapping pattern of the given string in the form of a list of strings.
Python provides a built-in function named “set.add()” that adds a new element to a set. The set.add() function accepts exactly one argument.
The “math.atan()” function takes a numeric value and returns the inverse tangent of the given number in radians (within the range of “-Pi/2” to “Pi/2”).
The “Fibonacci series” is created using the “for loop” iteration of any user-defined range. The Fibonacci series is generated by adding the previous two numbers.
In Python, the pillow module is used for multiples operation on digital images like cropping, filtering, drawing and enhancing, etc
In Python, the “math.ceil()” function takes positive or negative numeric values as arguments and rounds off the given numbers to the nearest integer.
To get the length of a Python string, a built-in function named “len()” or a user-defined function with “for loop” or “if-else” statements is used.
To create a Python list of dictionaries, place all the dictionaries within the square bracket using the comma-separated syntax
In Python, the “append()” function, “DataFrame.loc” and “pandas.concat()” functions are used to add or insert rows to pandas DataFrame.
The “DataFrame.reset_index()” resets any pandas DataFrame. The index of DataFrame is arranged according to the default index or the user-defined index
The “sort_values()” functions with “default parameter”, “descending order”, and “multiple columns” are used to Sort DataFrame by Column in Pandas
The “json.dumps()” function of the json module converts the value of the dictionary into JSON. The value is stored in “keys” and then converted into JSON.
In Python, the pandas “iterrows()” function iterates over the DataFrame rows and performs user-defined operations on them.
The “write()” function is used to write the string value in the text file. The new string value can be written into a new or existing text file
Python pip can be installed using the”$ sudo apt install python3-pip -y” command on Python3, while in Python2, “$ sudo python2 get-pip.py” command.
In Python, Escape characters such as “single quote”, “double quote”, “newline”, “carriage return”, “tab” etc are used to place characters inside the string.
In Python, the “json.loads()” function of the JSON module is used to convert the simple and nested JSON data file into the dictionary.
In Python, “list comprehension using the if-condition” is used to create the list and perform an operation on the existing elements of a list.
The logical “and” operator returns the boolean value “True” when both of the operands are “True”. This operator checks multiple conditions at one time.
The causes and solutions of python memory errors are discussed and how python memory error occurs due to the use of 32-Bit python installation.
In Python, an unexpected indent error is rectified by removing the wrong spaces or tabs from the code and following the code block structure.
The “read()” function, “read(n)” with parameter value, and “readline()” function is used to read a text file completely, specifically and line by line.
The mean of the NumPy array is calculated using the “np.mean()” function. This function can calculate the mean of “1D”,”2D”, and “3D” arrays along with the axis.
In Python, “Typecasting” converts the variable type into another data type by using a pre-defined function such as int(), str() and float(), etc.
The “If Not” statement is used to execute the statements of a program when the condition is “False”. The “If Not” statement is used to check any empty iterable.
In Python, the “And Operator” along with the “if statement” is used to initialize/compare multiple conditions in a single line of code.
In Python, the “readlines()”,”readline()”, ”for loop”, and “List Comprehension” methods are used to read a file line by line.
In Python, the random module function “randint()”, “random() method”, “random.sample()” and “for loop with randint()” functions are used to generate random numbers.
In Python, the “for loop” function iterates over the sequence of elements of different iterable objects like tuples, strings, and lists.
In Python, the class name is obtained by different methods like “type().__name__”, and “__class__.__name__” and “nested “__qualname__” method.
In Python, the relational operator is used to draw a comparison between values. The return type of these operators is a Boolean (true or false).
Indentation refers to the “whitespaces” and “tabs” before code lines. In Python, the indentation needs to be used properly for the successful code’s execution.
The division operators divide two input “float” or “integer” data type numbers using “/” and “//” operators. Both operators provide different types of answers.
The “os.mkdir()” method is used to create new directories. The “os module” provides functionality in which the python script can interact with the OS.
Static class variables are used when we want the same variables among all other class instances. The usage of static class variables is described here.
In Python, Dictionary “get() method” is used to access the value of the key. In the dictionary, every value is stored in the form “key-value” pair.
The “re.sub()” method is used to replace the strings by taking a string variable as an input. The “re.sub()” method is invoked after the “re” module.
In Python, the “for loop”, “while loop”, “string slicing”, “recursive method” and “reversed() function” are used to reverse a number.
In Python, the “split()” method is used to split the string according to the value provided by the “separator” parameter and “max split” parameter
In Python, the built-in “range() function”, “iter.tools() method” and “split() function” are used to repeat N times. All these methods are explained here.
In Python, we used several “Exit” commands like “quit()”, ”exit()”, “sys.exit()”, “os_exit()” and “SystemExit” to terminate the program.
The “str()”, “json.dumps()”, “pickle.dumps()”, and For loop (with “.join()” and “.items()”) can be used to convert the dictionary to string.
In Python, the “bin()” function, “format()” function, “f-string()” function, and “str.format()” method can be used to convert an integer to binary.