@ -827,7 +827,7 @@ import <package>.<module> # Imports a built-in or '<package>/<module>.py'.
* **Package is a collection of modules, but it can also define its own objects.**
* **On a filesystem this corresponds to a directory of Python files with an optional init script.**
* **Running `'import <package>'` does not automatically provide access to the package's modules unless they are explicitly imported in its init script.**
* **Location of the file that is passed to python command serves as a root of all local imports.**
* **Directory of the file that is passed to python command serves as a root of local imports.**
* **For relative imports use `'from .[…][<pkg/module>[.…]] import <obj>'`.**
@ -927,7 +927,7 @@ def fib(n):
return n if n <2elsefib(n-2)+fib(n-1)
```
* **Default size of the cache is 128 values. Passing `'maxsize=None'` makes it unbounded.**
* **CPython interpreter limits recursion depth to 1000 by default. To increase it use `'sys.setrecursionlimit(<int>)'`.**
* **CPython interpreter limits recursion depth to 3000 by default. To increase it use `'sys.setrecursionlimit(<int>)'`.**
### Parametrized Decorator
**A decorator that accepts arguments and returns a normal decorator that accepts a function.**
@ -1501,8 +1501,8 @@ Exit
```python
import sys
sys.exit() # Exits with exit code 0 (success).
sys.exit(<el>) # Prints to stderr and exits with 1.
sys.exit(<int>) # Exits with the passed exit code.
sys.exit(<obj>) # Prints to stderr and exits with 1.
@ -696,7 +696,7 @@ player = Player(point, direction) <span class="hljs-comment">#
<li><strong>Package is a collection of modules, but it can also define its own objects.</strong></li>
<li><strong>On a filesystem this corresponds to a directory of Python files with an optional init script.</strong></li>
<li><strong>Running <codeclass="python hljs"><spanclass="hljs-string">'import <package>'</span></code> does not automatically provide access to the package's modules unless they are explicitly imported in its init script.</strong></li>
<li><strong>Location of the file that is passed to python command serves as a root of all local imports.</strong></li>
<li><strong>Directory of the file that is passed to python command serves as a root of local imports.</strong></li>
<li><strong>For relative imports use <codeclass="python hljs"><spanclass="hljs-string">'from .[…][<pkg/module>[.…]] import <obj>'</span></code>.</strong></li>
</ul>
<div><h2id="closure"><ahref="#closure"name="closure">#</a>Closure</h2><p><strong>We have/get a closure in Python when a nested function references a value of its enclosing function and then the enclosing function returns the nested function.</strong></p><pre><codeclass="python language-python hljs"><spanclass="hljs-function"><spanclass="hljs-keyword">def</span><spanclass="hljs-title">get_multiplier</span><spanclass="hljs-params">(a)</span>:</span>
@ -779,7 +779,7 @@ player = Player(point, direction) <span class="hljs-comment">#
<ul>
<li><strong>Default size of the cache is 128 values. Passing <codeclass="python hljs"><spanclass="hljs-string">'maxsize=None'</span></code> makes it unbounded.</strong></li>
<li><strong>CPython interpreter limits recursion depth to 1000 by default. To increase it use <codeclass="python hljs"><spanclass="hljs-string">'sys.setrecursionlimit(<int>)'</span></code>.</strong></li>
<li><strong>CPython interpreter limits recursion depth to 3000 by default. To increase it use <codeclass="python hljs"><spanclass="hljs-string">'sys.setrecursionlimit(<int>)'</span></code>.</strong></li>
</ul>
<div><h3id="parametrizeddecorator">Parametrized Decorator</h3><p><strong>A decorator that accepts arguments and returns a normal decorator that accepts a function.</strong></p><pre><codeclass="python language-python hljs"><spanclass="hljs-keyword">from</span> functools <spanclass="hljs-keyword">import</span> wraps
<div><h2id="exit"><ahref="#exit"name="exit">#</a>Exit</h2><p><strong>Exits the interpreter by raising SystemExit exception.</strong></p><pre><codeclass="python language-python hljs"><spanclass="hljs-keyword">import</span> sys
sys.exit() <spanclass="hljs-comment"># Exits with exit code 0 (success).</span>
sys.exit(<el>) <spanclass="hljs-comment"># Prints to stderr and exits with 1.</span>
sys.exit(<int>) <spanclass="hljs-comment"># Exits with the passed exit code.</span>
sys.exit(<obj>) <spanclass="hljs-comment"># Prints to stderr and exits with 1.</span>
Jure Šorn
8 months ago