Initial commit

Solutions/3_5/tableformat.py

@@ -0,0 +1,57 @@
+# tableformat.py
+
+def print_table(records, fields, formatter):
+    formatter.headings(fields)
+    for r in records:
+        rowdata = [getattr(r, fieldname) for fieldname in fields]
+        formatter.row(rowdata)
+
+class TableFormatter:
+    def headings(self, headers):
+        raise NotImplementedError()
+
+    def row(self, rowdata):
+        raise NotImplementedError()
+
+class TextTableFormatter(TableFormatter):
+    def headings(self, headers):
+        print(' '.join('%10s' % h for h in headers))
+        print(('-'*10 + ' ')*len(headers))
+    
+    def row(self, rowdata):
+        print(' '.join('%10s' % d for d in rowdata))
+
+class CSVTableFormatter(TableFormatter):
+    def headings(self, headers):
+        print(','.join(headers))
+
+    def row(self, rowdata):
+        print(','.join(str(d) for d in rowdata))
+
+class HTMLTableFormatter(TableFormatter):
+    def headings(self, headers):
+        print('<tr>', end=' ')
+        for h in headers:
+            print('<th>%s</th>' % h, end=' ')
+        print('</tr>')
+
+    def row(self, rowdata):
+        print('<tr>', end=' ')
+        for d in rowdata:
+            print('<td>%s</td>' % d, end=' ')
+        print('</tr>')
+
+def create_formatter(name):
+    if name == 'text':
+        formatter_cls = TextTableFormatter
+    elif name == 'csv':
+        formatter_cls = CSVTableFormatter
+    elif name == 'html':
+        formatter_cls = HTMLTableFormatter
+    else:
+        raise RuntimeError('Unknown format %s' % name)
+    return formatter_cls()
+
+
+
+