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<title>3.28.1 Repr Objects
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<H2><A NAME=
"SECTION0052810000000000000000"></A><A NAME=
"Repr-objects"></A>
<tt class=
"class">Repr
</tt> instances provide several members which can be used to
provide size limits for the representations of different object types,
and methods which format specific object types.
<dl><dt><b><tt id='l2h-
779' xml:id='l2h-
779'
class=
"member">maxlevel
</tt></b></dt>
Depth limit on the creation of recursive representations. The
default is
<code>6</code>.
<dl><dt><b><tt id='l2h-
780' xml:id='l2h-
780'
class=
"member">maxdict
</tt></b></dt>
<dt><b><tt id='l2h-
781' xml:id='l2h-
781'
class=
"member">maxlist
</tt></b></dt><dd><dt><b><tt id='l2h-
782' xml:id='l2h-
782'
class=
"member">maxtuple
</tt></b></dt><dd><dt><b><tt id='l2h-
783' xml:id='l2h-
783'
class=
"member">maxset
</tt></b></dt><dd><dt><b><tt id='l2h-
784' xml:id='l2h-
784'
class=
"member">maxfrozenset
</tt></b></dt><dd><dt><b><tt id='l2h-
785' xml:id='l2h-
785'
class=
"member">maxdeque
</tt></b></dt><dd><dt><b><tt id='l2h-
786' xml:id='l2h-
786'
class=
"member">maxarray
</tt></b></dt><dd> Limits on the number of entries represented for the named object
type. The default is
<code>4</code> for
<tt class=
"member">maxdict
</tt>,
<code>5</code> for
<tt class=
"member">maxarray
</tt>, and
<code>6</code> for the others.
<span class=
"versionnote">New in version
2.4:
<tt class=
"member">maxset
</tt>,
<tt class=
"member">maxfrozenset
</tt>,
and
<tt class=
"member">set
</tt>.
</span>
<dl><dt><b><tt id='l2h-
787' xml:id='l2h-
787'
class=
"member">maxlong
</tt></b></dt>
Maximum number of characters in the representation for a long
integer. Digits are dropped from the middle. The default is
<dl><dt><b><tt id='l2h-
788' xml:id='l2h-
788'
class=
"member">maxstring
</tt></b></dt>
Limit on the number of characters in the representation of the
string. Note that the ``normal'' representation of the string is
used as the character source: if escape sequences are needed in the
representation, these may be mangled when the representation is
shortened. The default is
<code>30</code>.
<dl><dt><b><tt id='l2h-
789' xml:id='l2h-
789'
class=
"member">maxother
</tt></b></dt>
This limit is used to control the size of object types for which no
specific formatting method is available on the
<tt class=
"class">Repr
</tt> object.
It is applied in a similar manner as
<tt class=
"member">maxstring
</tt>. The
default is
<code>20</code>.
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline">
<td><nobr><b><tt id='l2h-
790' xml:id='l2h-
790'
class=
"method">repr
</tt></b>(
</nobr></td>
<td><var>obj
</var>)
</td></tr></table></dt>
The equivalent to the built-in
<tt class=
"function">repr()
</tt> that uses the
formatting imposed by the instance.
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline">
<td><nobr><b><tt id='l2h-
791' xml:id='l2h-
791'
class=
"method">repr1
</tt></b>(
</nobr></td>
<td><var>obj, level
</var>)
</td></tr></table></dt>
Recursive implementation used by
<tt class=
"method">repr()
</tt>. This uses the
type of
<var>obj
</var> to determine which formatting method to call,
passing it
<var>obj
</var> and
<var>level
</var>. The type-specific methods
should call
<tt class=
"method">repr1()
</tt> to perform recursive formatting, with
<code><var>level
</var> -
1</code> for the value of
<var>level
</var> in the recursive
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline">
<td><nobr><b>repr_
<var>type
</var></b>(
</nobr></td>
<td><var>obj, level
</var>)
</td></tr></table></dt>
Formatting methods for specific types are implemented as methods
with a name based on the type name. In the method name,
<var>type
</var>
<code>string.join(string.split(type(
<var>obj
</var>).__name__, '_'))
</code>.
Dispatch to these methods is handled by
<tt class=
"method">repr1()
</tt>.
Type-specific methods which need to recursively format a value
should call
"<tt class="samp
">self.repr1(<var>subobj</var>, <var>level</var> - 1)</tt>".
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<span class=
"release-info">Release
2.4.2, documentation updated on
28 September
2005.
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