What are the differences between Python 2.x and Python 3.x?

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Python 2.x is an older version of Python. Python 3.x is newer and latest version. Python 2.x is legacy now. Python 3.x is the present and future of this language. The most visible difference between Python2 and Python3 is in print statement (function). In Python 2, it looks like print “Hello”, and in Python 3, … Read more

How can we make forms in Python?

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You have to import CGI module to access form fields using FieldStorage class. Attributes of class FieldStorage for the form: form.name: The name of the field, if specified. form.filename: If an FTP transaction, the client-side filename. form.value: The value of the field as a string. form.file: file object from which data read. form.type: The content … Read more

What is the usage of help() and dir() function in Python?

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Help() and dir() both functions are accessible from the Python interpreter and used for viewing a consolidated dump of built-in functions. Help() function: The help() function is used to display the documentation string and also facilitates us to see the help related to modules, keywords, and attributes. Dir() function: The dir() function is used to … Read more

What is pickling and unpickling in Python?

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The Python pickle is defined as a module which accepts any Python object and converts it into a string representation. It dumps the Python object into a file using the dump function; this process is called pickling. The process of retrieving the original Python objects from the stored string representation is called as Unpickling. Pickling … Read more

What is a negative index in Python?

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Python sequences are accessible using an index in positive and negative numbers. For example, 0 is the first positive index, 1 is the second positive index and so on. For negative indexes -1 is the last negative index, -2 is the second last negative index and so on. Index traverses from left to right and … Read more