ch07: example files

07-1class-func/tagger.py

@@ -0,0 +1,45 @@
+
+
+"""
+# tag::TAG_DEMO[]
+>>> tag('br')  # <1>
+'<br />'
+>>> tag('p', 'hello')  # <2>
+'<p>hello</p>'
+>>> print(tag('p', 'hello', 'world'))
+<p>hello</p>
+<p>world</p>
+>>> tag('p', 'hello', id=33)  # <3>
+'<p id="33">hello</p>'
+>>> print(tag('p', 'hello', 'world', class_='sidebar'))  # <4>
+<p class="sidebar">hello</p>
+<p class="sidebar">world</p>
+>>> tag(content='testing', name="img")  # <5>
+'<img content="testing" />'
+>>> my_tag = {'name': 'img', 'title': 'Sunset Boulevard',
+...           'src': 'sunset.jpg', 'class': 'framed'}
+>>> tag(**my_tag)  # <6>
+'<img class="framed" src="sunset.jpg" title="Sunset Boulevard" />'
+
+# end::TAG_DEMO[]
+"""
+
+
+# tag::TAG_FUNC[]
+def tag(name, *content, class_=None, **attrs):
+    """Generate one or more HTML tags"""
+    if class_ is not None:
+        attrs['class'] = class_
+    if attrs:
+        attr_pairs = (f' {attr}="{value}"' for attr, value
+                      in sorted(attrs.items()))
+        attr_str = ''.join(attr_pairs)
+    else:
+        attr_str = ''
+    if content:
+        elements = (f'<{name}{attr_str}>{c}</{name}>'
+                    for c in content)
+        return '\n'.join(elements)
+    else:
+        return f'<{name}{attr_str} />'
+# end::TAG_FUNC[]