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| author | Cengiz Kaygusuz <cngkaygusuz@gmail.com> | 2017-11-20 20:46:39 -0500 |
|---|---|---|
| committer | Cengiz Kaygusuz <cngkaygusuz@gmail.com> | 2017-11-20 20:46:39 -0500 |
| commit | 27e183a78c8062ed7c2bbb91655a5e56cd697bba (patch) | |
| tree | 88fd355a0cc6da4c130582e092d702836596cbb2 /examples/dictExample2.py | |
| parent | 4ba589cf13588e90992e23deb5a9784340efd2cc (diff) | |
| download | pyparsing-git-27e183a78c8062ed7c2bbb91655a5e56cd697bba.tar.gz | |
Move src to root
Diffstat (limited to 'examples/dictExample2.py')
| -rw-r--r-- | examples/dictExample2.py | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/examples/dictExample2.py b/examples/dictExample2.py new file mode 100644 index 0000000..cae463b --- /dev/null +++ b/examples/dictExample2.py @@ -0,0 +1,59 @@ +#
+# dictExample2.py
+#
+# Illustration of using pyparsing's Dict class to process tabular data
+# Enhanced Dict example, courtesy of Mike Kelly
+#
+# Copyright (c) 2004, Paul McGuire
+#
+from pyparsing import Literal, Word, Group, Dict, ZeroOrMore, alphas, nums, delimitedList, pyparsing_common
+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
+underline = Word("-=")
+number = pyparsing_common.integer
+
+vert = Literal("|").suppress()
+
+rowDelim = ("+" + ZeroOrMore( underline + "+" ) ).suppress()
+columnHeader = Group(vert + vert + delimitedList(Word(alphas + nums), "|") + vert)
+
+heading = rowDelim + columnHeader("columns") + rowDelim
+rowData = Group( vert + Word(alphas) + vert + delimitedList(number,"|") + vert )
+trailing = rowDelim
+
+datatable = heading + Dict( ZeroOrMore(rowData) ) + trailing
+
+# now parse data and print results
+data = datatable.parseString(testData)
+print(data.dump())
+print("data keys=", list(data.keys()))
+print("data['min']=", data['min'])
+print("sum(data['min']) =", sum(data['min']))
+print("data.max =", data.max)
+print("sum(data.max) =", sum(data.max))
+
+# now print transpose of data table, using column labels read from table header and
+# values from data lists
+print()
+print(" " * 5, end=' ')
+for i in range(1,len(data)):
+ print("|%5s" % data[i][0], end=' ')
+print()
+print(("-" * 6) + ("+------" * (len(data)-1)))
+for i in range(len(data.columns)):
+ print("%5s" % data.columns[i], end=' ')
+ for j in range(len(data) - 1):
+ print('|%5s' % data[j + 1][i + 1], end=' ')
+ print()
|