cctk.LazyLineObject

class cctk.LazyLineObject(file, start, end)[source]

Bases: object

Instead of storing lines as an array, this object can be used. It reduces the memory usage drastically! It looks up lines only when needed.

__init__(file, start, end)[source]

Methods

__init__(file, start, end)

find_parameter(parameter, expected_length, ...)

param parameter:

test to search for

full_text()

search_for_block(start, end[, count, join, ...])

Search through a file (lines) and locate a block starting with "start" (inclusive) and ending with "end" (exclusive).
find_parameter(parameter, expected_length, which_field, split_on=None, cast_to_float=True)[source]
Parameters:

  • parameter (string) – test to search for

  • expected_length (int) – how many fields there should be

  • which_field (int or list) – which field(s) the parameter is (zero-indexed)

  • split_on (str) – additional non-space field on which to split

  • cast_to_float (Bool) – whether or not to cast extracted value to float

Returns:

a list of all the extracted values

full_text()[source]
search_for_block(start, end, count=1, join=' ', max_len=1000, format_line=None)[source]

Search through a file (lines) and locate a block starting with “start” (inclusive) and ending with “end” (exclusive).

Parameters:

  • start (str) – a pattern that matches the start of the block (can contain special characters)

  • end (str) – a pattern that matches the end of the block (can contain special characters) - None removes this (so a selection of max_lines is guaranteed)

  • count (int) – how many matches to search for

  • join (str) – spacer between lines

  • max_len (int) – maximum length of matches (to prevent overflow)

  • format_line (function) – function to perform to each line before adding to match (e.g. remove leading space)

Returns:

a single match (str) if count == 1 or a list of matches (str) if count > 1.