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Python 3.0 aimed to correct inconsistencies and design flaws in the language, even if it meant breaking backward compatibility. It eliminated outdated practices and promoted more modern and intuitive programming methods.

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The def keyword is used to create, (or define) a function in python.

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The binary form of 1 is 0001. The expression x<<2 implies we are performing bitwise left shift on x. This shift yields the value: 0100, which is the binary form of the number 4.

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Python supports the creation of anonymous functions (i.e. functions that are not bound to a name) at runtime, using a construct called lambda. Lambda functions are restricted to a single expression. They can be used wherever normal functions can be used.

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True, False and None are capitalized while the others are in lower case.

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Many languages have been implemented using both compilers and interpreters, including C, Pascal, and Python.

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Python's interpreted nature allows for quick iteration and prototyping, which is invaluable in research and development phases. Developers can test and modify their code on the fly without the need for a separate compilation step.

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To write single-line comments in Python use the Hash character (#) at the beginning of the line. It is also called number sign or pound sign. To write multi-line comments, close the text between triple quotes.
Example: “”” comment
text “””

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The design for readability in Python makes the language more accessible to beginners and promotes good coding practices. This leads to easier collaboration among developers and simplifies maintenance of code.

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Subsequent versions of Python 3 have refined the language by embracing modern programming paradigms, expanding the standard library, enhancing performance, and adapting to user needs and global tech trends.