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In Python, a generator can be thought of as an iterator that contains a frozen stack frame. Whenever next() is called on the iterator, Python resumes the frozen frame, which executes normally until the next yield statement is reached. The generator's frame is then frozen again, and the yielded value is returned to the caller.
Python uses the following syntax to express list comprehensions over finite lists: S = [ 2 * x for x in range ( 100 ) if x ** 2 > 3 ] A generator expression may be used in Python versions >= 2.4 which gives lazy evaluation over its input, and can be used with generators to iterate over 'infinite' input such as the count generator function which ...
Python is known as a glue language, [76] able to work very well with many other languages with ease of access. Python uses dynamic typing and a combination of reference counting and a cycle-detecting garbage collector for memory management. [77] It uses dynamic name resolution (late binding), which binds method and variable names during program ...
There are subtle differences and distinctions in the use of the terms "generator" and "iterator", which vary between authors and languages. [5] In Python, a generator is an iterator constructor: a function that returns an iterator. An example of a Python generator returning an iterator for the Fibonacci numbers using Python's yield statement ...
Specifically, while both can yield multiple times, suspending their execution and allowing re-entry at multiple entry points, they differ in coroutines' ability to control where execution continues immediately after they yield, while generators cannot, instead transferring control back to the generator's caller. [9]
The Vanguard High Dividend Yield ETF (NYSEMKT: VYM) and the iShares Preferred and Income Securities ETF (NASDAQ: PFF) are two excellent dividend ETFs. ... Many ETFs are designed to generate income ...
For example, consider Automatic Data Processing, which recently sported a yield of 1.93%. But look into its dividend history, and you'll see a recent annual dividend of $5.60 per share, up from $4 ...
The ETF currently sports a dividend yield of 3.5%, which is pretty good compared with the 1.2% average yield of the S&P 500 index. What's more, the WisdomTree U.S. High Dividend Fund concentrates ...