Python

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

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.

In Python, built-in functions like “str()”,”format()”, and the “f-string” methods are used as an equivalent of the “tostring()” function.

In Python, one line for a loop is used to perform multiple operations in a single line. The one-line for loop operations reduces the space and amount of code.

In Python, the append() method, For Loop method, List initializer, and the comprehension list methods are used to create a list of lists.

In Python, the “is operator”, “isinstance()” method, “Try-Except Block”, and “Dictionary” is used to check if a Variable Is None.

In Python, the “type” returns the variable type, whereas the “isinstance” checks the presence of value in the specific datatype.

In Python, you can print variables using the “f-string” method, “string concatenation” method, and “.format()” function.

In Python, you can remove substrings from strings using the built-in replace() method, loop with replace() method, and by index number method.

In Python, a few built-in functions like “strip()”, “rstrip()”, “lstrip()” and “replace()” are used to remove the new line from a string.