lepl.support.lib

Module lib

Classes

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str
unicode(string [, encoding[, errors]]) -> object

basestring
unicode(string [, encoding[, errors]]) -> object

CircularFifo
A FIFO queue with a fixed maximum size that silently discards data on overflow.

LogMixin
Add standard Python logging to a class.

Functions

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Unicode character

chr(i)
Return a Unicode string of one character with ordinal i; 0 <= i <= 0x10ffff.

assert_type(name, value, type_, none_ok=False)
If the value is not of the given type, raise a syntax error.

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open_stop(spec)
In Python 2.6 open [] appears to use maxint or similar, which is not available in Python 3.

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lmap(function, values)
A map that returns a list rather than an iterator.

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compose(fun_a, fun_b)
Functional composition (assumes fun_a takes a single argument).

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compose_tuple(fun_a, fun_b)
Functional composition (assumes fun_b returns a sequence which is supplied to fun_a via *args).

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empty()
An empty generator.

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count(value=0, step=1)
Identical to itertools.count for recent Python, but 2.6 lacks the step.

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safe_in(value, container, default=False)
Test for membership without an error for unhashable items.

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safe_add(container, value)
Add items to a container, if they are hashable.

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fallback_add(container, value)
Add items to a container.

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fold(fun, start, sequence)
Fold over a sequence.

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sample(prefix, rest, size=40)
Provide a small sample of a string.

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singleton(key, factory=None)
Manage singletons for various types.

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fmt(template, *args, **kargs)
Guarantee that template is always unicode, as embedding unicode in ascii can cause errors.

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identity(x)

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document(destn, source, text=None)
Copy function name and docs.

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add_defaults(original, defaults, prefix='')
Add defaults to original dict if not already present.

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Variables

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file = IOBase

__SINGLETONS = {}
Map from factory (constructor/class) to singleton.

Function Details

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open_stop(spec)

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In Python 2.6 open [] appears to use maxint or similar, which is not available in Python 3. This uses a minimum value for maxint I found somewhere; hopefully no-one ever wants finite repeats larger than this.

fallback_add(container, value)

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Add items to a container. Call initially with a set, but accept the returned collection, which will fallback to a list of necessary (if the contents are unhashable).