@ -204,7 +204,7 @@ pre.prettyprint {
< br > < h2 id = "toc" > < a href = "#toc" name = "toc" > #< / a > Contents< / h2 >
< pre > < code class = "hljs bash" > < strong > ToC< / strong > = {
< strong > < span class = "hljs-string" > < span class = "hljs-string" > '1. Collections'< / span > < / span > < / strong > : [< a href = "#list" > List< / a > , < a href = "#dictionary" > Dict< / a > , < a href = "#set" > Set< / a > , < a href = "#range" > Range< / a > , < a href = "#enumerate" > Enumerate< / a > , < a href = "#namedtuple" > Namedtupl e< / a > , < a href = "#iterator" > Iterator< / a > , < a href = "#generator" > Generator< / a > ],
< strong > < span class = "hljs-string" > < span class = "hljs-string" > '1. Collections'< / span > < / span > < / strong > : [< a href = "#list" > List< / a > , < a href = "#dictionary" > Dict< / a > , < a href = "#set" > Set< / a > , < a href = "#tuple" > Tuple< / a > , < a href = "# range" > Range< / a > , < a href = "#enumerate" > Enumerate< / a > , < a href = "#iterator" > Iterator< / a > , < a href = "#generator" > Generator< / a > ],
< strong > < span class = "hljs-string" > < span class = "hljs-string" > '2. Types'< / span > < / span > < / strong > : [< a href = "#type" > Type< / a > , < a href = "#string" > String< / a > , < a href = "#regex" > Regex< / a > , < a href = "#format" > Format< / a > , < a href = "#numbers" > Numbers< / a > , < a href = "#combinatorics" > Combinatorics< / a > , < a href = "#datetime" > Datetime< / a > ],
< strong > < span class = "hljs-string" > < span class = "hljs-string" > '3. Syntax'< / span > < / span > < / strong > : [< a href = "#arguments" > Args< / a > , < a href = "#inline" > Inline< / a > , < a href = "#closure" > Closure< / a > , < a href = "#decorator" > Decorator< / a > , < a href = "#class" > Class< / a > , < a href = "#ducktypes" > Duck_Types< / a > , < a href = "#enum" > Enum< / a > , < a href = "#exceptions" > Exceptions< / a > ],
< strong > < span class = "hljs-string" > < span class = "hljs-string" > '4. System'< / span > < / span > < / strong > : [< a href = "#print" > Print< / a > , < a href = "#input" > Input< / a > , < a href = "#commandlinearguments" > Command_Line_Arguments< / a > , < a href = "#open" > Open< / a > , < a href = "#path" > Path< / a > , < a href = "#commandexecution" > Command_Execution< / a > ],
@ -286,27 +286,21 @@ Counter({<span class="hljs-string">'blue'</span>: <span class="hljs-number">3</s
< pre > < code class = "python language-python hljs" > < set> .remove(< el> ) < span class = "hljs-comment" > # Raises KeyError.< / span >
< set> .discard(< el> ) < span class = "hljs-comment" > # Doesn't raise an error.< / span >
< / code > < / pre >
< h3 id = "frozenset" > Frozenset< / h3 >
< h4 id = "ishashablemeaningitcanbeusedasakeyinadictionaryorasanelementinaset" > Is hashable, meaning it can be used as a key in a dictionary or as an element in a set.< / h4 >
< h3 id = "frozenset" > Frozen Set< / h3 >
< ul >
< li > < strong > Frozen set is immutable and hashable set.< / strong > < / li >
< li > < strong > It can be used as a key in a dictionary or as an element in a set.< / strong > < / li >
< / ul >
< pre > < code class = "python language-python hljs" > < frozenset> = frozenset(< collection> )
< / code > < / pre >
< h2 id = "range" > < a href = "#range" name = "range" > #< / a > Range< / h2 >
< pre > < code class = "python language-python hljs" > < range> = range(to_exclusive)
< range> = range(from_inclusive, to_exclusive)
< range> = range(from_inclusive, to_exclusive, ±step_size)
< / code > < / pre >
< pre > < code class = "python language-python hljs" > from_inclusive = < range> .start
to_exclusive = < range> .stop
< h2 id = "tuple" > < a href = "#tuple" name = "tuple" > #< / a > Tuple< / h2 >
< p > < strong > Tuple is immutable and hashable list.< / strong > < / p >
< pre > < code class = "python language-python hljs" > < tuple> = ()
< tuple> = (< el> , )
< tuple> = (< el_1> , < el_2> , ...)
< / code > < / pre >
< h2 id = "enumerate" > < a href = "#enumerate" name = "enumerate" > #< / a > Enumerate< / h2 >
< pre > < code class = "python language-python hljs" > < span class = "hljs-keyword" > for< / span > i, el < span class = "hljs-keyword" > in< / span > enumerate(< collection> [, i_start]):
...
< / code > < / pre >
< h2 id = "namedtuple" > < a href = "#namedtuple" name = "namedtuple" > #< / a > Named Tuple< / h2 >
< ul >
< li > < strong > Tuple is an immutable and hashable list.< / strong > < / li >
< li > < strong > Named tuple is its subclass with named elements.< / strong > < / li >
< / ul >
< h3 id = "namedtuple" > Named Tuple< / h3 >
< p > < strong > Named tuple is tuple's subclass with named elements.< / strong > < / p >
< pre > < code class = "python language-python hljs" > < span class = "hljs-meta" > > > > < / span > < span class = "hljs-keyword" > from< / span > collections < span class = "hljs-keyword" > import< / span > namedtuple
< span class = "hljs-meta" > > > > < / span > Point = namedtuple(< span class = "hljs-string" > 'Point'< / span > , < span class = "hljs-string" > 'x y'< / span > )
< span class = "hljs-meta" > > > > < / span > p = Point(< span class = "hljs-number" > 1< / span > , y=< span class = "hljs-number" > 2< / span > )
@ -320,6 +314,18 @@ Point(x=<span class="hljs-number">1</span>, y=<span class="hljs-number">2</span>
< span class = "hljs-meta" > > > > < / span > p._fields < span class = "hljs-comment" > # Or: Point._fields< / span >
(< span class = "hljs-string" > 'x'< / span > , < span class = "hljs-string" > 'y'< / span > )
< / code > < / pre >
< h2 id = "range" > < a href = "#range" name = "range" > #< / a > Range< / h2 >
< pre > < code class = "python language-python hljs" > < range> = range(to_exclusive)
< range> = range(from_inclusive, to_exclusive)
< range> = range(from_inclusive, to_exclusive, ±step_size)
< / code > < / pre >
< pre > < code class = "python language-python hljs" > from_inclusive = < range> .start
to_exclusive = < range> .stop
< / code > < / pre >
< h2 id = "enumerate" > < a href = "#enumerate" name = "enumerate" > #< / a > Enumerate< / h2 >
< pre > < code class = "python language-python hljs" > < span class = "hljs-keyword" > for< / span > i, el < span class = "hljs-keyword" > in< / span > enumerate(< collection> [, i_start]):
...
< / code > < / pre >
< h2 id = "iterator" > < a href = "#iterator" name = "iterator" > #< / a > Iterator< / h2 >
< pre > < code class = "python language-python hljs" > < span class = "hljs-keyword" > from< / span > itertools < span class = "hljs-keyword" > import< / span > count, repeat, cycle, chain, islice
< / code > < / pre >
Jure Šorn
6 years ago