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| author | Paul McGuire <ptmcg@austin.rr.com> | 2012-10-02 04:55:56 +0000 |
|---|---|---|
| committer | Paul McGuire <ptmcg@austin.rr.com> | 2012-10-02 04:55:56 +0000 |
| commit | a7f9dda0668bfce4fba51df1bf2976b4a93a8bd5 (patch) | |
| tree | 57ea8bcf2e66532a36c833a7bc57cff9d5d0e4dd /src/examples/dictExample.py | |
| parent | f5d2b716ffb57b65660a7ee0bbf04332dfb29620 (diff) | |
| download | pyparsing-git-a7f9dda0668bfce4fba51df1bf2976b4a93a8bd5.tar.gz | |
Add example files to SVN
Diffstat (limited to 'src/examples/dictExample.py')
| -rw-r--r-- | src/examples/dictExample.py | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/examples/dictExample.py b/src/examples/dictExample.py new file mode 100644 index 0000000..7fbadf1 --- /dev/null +++ b/src/examples/dictExample.py @@ -0,0 +1,41 @@ +#
+# dictExample.py
+#
+# Illustration of using pyparsing's Dict class to process tabular data
+#
+# Copyright (c) 2003, Paul McGuire
+#
+from pyparsing import Literal, Word, Group, Dict, ZeroOrMore, alphas, nums, delimitedList
+import pprint
+
+testData = """
++-------+------+------+------+------+------+------+------+------+
+| | A1 | B1 | C1 | D1 | A2 | B2 | C2 | D2 |
++=======+======+======+======+======+======+======+======+======+
+| min | 7 | 43 | 7 | 15 | 82 | 98 | 1 | 37 |
+| max | 11 | 52 | 10 | 17 | 85 | 112 | 4 | 39 |
+| ave | 9 | 47 | 8 | 16 | 84 | 106 | 3 | 38 |
+| sdev | 1 | 3 | 1 | 1 | 1 | 3 | 1 | 1 |
++-------+------+------+------+------+------+------+------+------+
+"""
+
+# define grammar for datatable
+heading = (Literal(
+"+-------+------+------+------+------+------+------+------+------+") +
+"| | A1 | B1 | C1 | D1 | A2 | B2 | C2 | D2 |" +
+"+=======+======+======+======+======+======+======+======+======+").suppress()
+vert = Literal("|").suppress()
+number = Word(nums)
+rowData = Group( vert + Word(alphas) + vert + delimitedList(number,"|") + vert )
+trailing = Literal(
+"+-------+------+------+------+------+------+------+------+------+").suppress()
+
+datatable = heading + Dict( ZeroOrMore(rowData) ) + trailing
+
+# now parse data and print results
+data = datatable.parseString(testData)
+print data
+pprint.pprint(data.asList())
+print "data keys=", data.keys()
+print "data['min']=", data['min']
+print "data.max", data.max
|