Différences

Ci-dessous, les différences entre deux révisions de la page.

--- python_pyqt [2016/10/20 12:33] – créée francois
+++ python_pyqt [2016/10/20 13:01] (Version actuelle) – créée francois
@@ Ligne 3: / Ligne 3: @@
 ==== Variables and Objects ====
   * Dynamic Typing
-  * ''variables'' as //Object references//
+  * ''variables'' are //Object references//
 <note important>
@@ Ligne 11: / Ligne 11: @@
 </note>
-  * comparison opérator ''=='' , ''<'' ... ==> **Value** comparison
+  * comparison opérator ''=='' , ''<'' ... => **Value** comparison
-  * ''is'' operator ==> identity comparison (identify of an object can be retriece by ''object.**id()**'')
+  * ''is'' operator => identity comparison (identify of an object can be retriece by ''object.**id()**'')
   * ''**//None//**'' special //null// object (singleton)
+<note tip>
+Python keywords\\
+''and class elif finally if lambda print while as continue else for import not raise with
+assert def except from in or return yield break del exec global is pass try''
+</note>
+==== Numbers and Strings ====
+  * all basic types are //immutable//
+=== Integers and Long Integers ===
+  * ''bool'' : boolean with two values ''**False**'' and ''**True**''
+    * In integer context ''False'' is evaluated to **0** , ''True'' is evaluted to **1**
+  * ''int'' : //classical// machine related integer
+    * operation with ''int'' exceeding the ''int'' range is converted into ''long'
+  * ''long'' : integer which size is the machine memory
+    * use suffix ''**L**'' to signify a ''long'' value
+  * numbers are by default written in **base 10**
+  * Python assume that any value with prefix ''0x'' is written in hexadecimal, octol for value starting with **0**
+  * classical operators ''+ - / % += -= /= %='' , '**' for power , '//' for truncated division
+  * '//'' is
+=== Float and Decimal ==
+  * float: double-precision floating-point numbers whose range depends on the C (or Java) compiler computed in base 2
+  * Decimal
+  * complex
+=== String TYpes ===