Itertools izip to list install#
Itertools izip to list generator#
Itertools izip to list full#
Itertools izip to list zip#

itertools has a new function, groupby() for aggregating iterables into groups sharing the same key (as determined by a key function). The module standardizes a core set of fast, memory efficient tools that are useful by themselves or in combination. Python 2.3 introduced the itertools module, which defined variants of the global zip(), map(), and filter() functions that returned iterators instead of lists.

Itertools izip to list install#

Bugzilla - Bug 107564 AttributeError: 'module' object has no attribute 'combinations_with_replacement' Last modified: 15:49:32 UTC Getting started To get started, install the library with pip: pip install more-itertools In more-itertools we collect additional building blocks, recipes, and routines for working with Python iterables. module 'itertools' has no attribute 'izip' module 'torch' has no attribute 'gesv' module 'tensorflow' has no attribute 'placeholder' module 'tensorflow' has no attribute 'Session' 'module' object has no attribute 'style' 'module' object has no attribute 'Env' module pandas has no attribute core. I can build a mask list (True/False for small values to keep), but I'm looking for a cleaner more pythonic way.

Itertools izip to list full#

Results in the 'unpacking argument list' part (*) of this to trigger a full iteration over the entire iterator and (I assume) cache all results in memory, which is as I said, an issue for me.

Itertools izip to list zip#

Using the widely suggested zip solution, similar to: > zip(*) I can't think of a smart way to generate one 'list of values' at a time, because I might decide to remove instances of a three-value-tuple occasionally, depending on the big value of the tuple. Out of those three-tuple-values, only one is has big items (memory consumption wise) in it (lets call it data) while the other two contain only values that require only little amount of memory to hold, so iterating over the data value's 'list of values' first should work for me by consuming the data values one by one, and caching the small ones.

Itertools izip to list generator#

More specifically, I have a generator that generates a three values tuple, and instead of iterating it I'd like to feed three lists of values to three functions, each list represents a single position in the tuple. I need an iterator because I can't fit all values to memory so instead I'm using a generator and iterating over the values.

Like zip() except that it returns an iterator instead of a list I saw this, and this questions and I'd like to have the same effect, only efficiently done with itertool.izip.