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| -rw-r--r-- | Doc/library/shlex.rst | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/Doc/library/shlex.rst b/Doc/library/shlex.rst index 1a89bf6..4926f04 100644 --- a/Doc/library/shlex.rst +++ b/Doc/library/shlex.rst @@ -374,23 +374,19 @@ is changed: any run of these characters is returned as a single token. While this is short of a full parser for shells (which would be out of scope for the standard library, given the multiplicity of shells out there), it does allow you to perform processing of command lines more easily than you could -otherwise. To illustrate, you can see the difference in the following snippet:: +otherwise. To illustrate, you can see the difference in the following snippet: - import shlex +.. doctest:: + :options: +NORMALIZE_WHITESPACE - for punct in (False, True): - if punct: - message = 'Old' - else: - message = 'New' - text = "a && b; c && d || e; f >'abc'; (def \"ghi\")" - s = shlex.shlex(text, punctuation_chars=punct) - print('%s: %s' % (message, list(s))) - -which prints out:: - - Old: ['a', '&', '&', 'b', ';', 'c', '&', '&', 'd', '|', '|', 'e', ';', 'f', '>', "'abc'", ';', '(', 'def', '"ghi"', ')'] - New: ['a', '&&', 'b', ';', 'c', '&&', 'd', '||', 'e', ';', 'f', '>', "'abc'", ';', '(', 'def', '"ghi"', ')'] + >>> import shlex + >>> text = "a && b; c && d || e; f >'abc'; (def \"ghi\")" + >>> list(shlex.shlex(text)) + ['a', '&', '&', 'b', ';', 'c', '&', '&', 'd', '|', '|', 'e', ';', 'f', '>', + "'abc'", ';', '(', 'def', '"ghi"', ')'] + >>> list(shlex.shlex(text, punctuation_chars=True)) + ['a', '&&', 'b', ';', 'c', '&&', 'd', '||', 'e', ';', 'f', '>', "'abc'", + ';', '(', 'def', '"ghi"', ')'] Of course, tokens will be returned which are not valid for shells, and you'll need to implement your own error checks on the returned tokens. |