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--- other:python:misc_by_jyp [2023/12/08 15:51]
jypeter [Efficient looping with numpy, map and itertools] Added list comprehension
+++ other:python:misc_by_jyp [2024/09/25 13:37] (current)
jypeter [Extra tutorials] Multithreading and Multiprocessing tuto
@@ Line 5: / Line 5: @@
 </WRAP>
+===== Extra tutorials =====
+Only **when you have already read all the content of this page several times**, and you are looking for new ideas
+  * [[https://medium.com/@yaduvanshineelam09/ultimate-python-cheat-sheet-practical-python-for-everyday-tasks-8a33abc0892f|Ultimate Python Cheat Sheet: Practical Python For Everyday Tasks]]
+  * [[https://medium.com/pythoneers/16-hacks-that-will-take-your-python-skills-to-the-next-level-12e7a9b97421|16 Hacks That Will Take Your Python Skills to the Next Level]]
+  * [[https://levelup.gitconnected.com/modular-coding-in-python-finally-solve-your-import-errors-af2fd172fcf7|Modular Coding in Python: Finally Solve your Import Errors]] (understanding and fixing ModuleNotFoundError and ImportError)
+  * [[https://medium.com/@moraneus/understanding-multithreading-and-multiprocessing-in-python-1ed39bb078d5|Understanding Multithreading and Multiprocessing in Python]]
 ===== Reading/setting environments variables =====
@@ Line 26: / Line 33: @@
+===== Using log files (aka logging) =====
+It is always possible to display information messages using the ''print()'' command, but it is more efficient to use //logging// tools when you want to **display correctly a lot of information about a script progress
+**
+  * [[https://loguru.readthedocs.io/|Loguru]] is a library which aims to bring enjoyable logging in Python
+    * See also [[https://betterstack.com/community/guides/logging/loguru/|A Complete Guide to Logging in Python with Loguru]]
+  * More on [[https://betterstack.com/community/guides/logging/#python|logging with python]]
+  * The default (but not easy to use) Python ''[[https://docs.python.org/3/library/logging.html|logging]]'' module
 ===== Stopping a script =====
@@ Line 41: / Line 56: @@
 ===== Playing with strings =====
+==== String formatting ====
+  * Knowing how to display/print a string correctly is always useful for information and debugging purpose
+  * There are lots of different ways to display strings
+=== String formatting examples ===
+You will find below some examples of //quick printing//, as well as using //old style formatting//, //formatted string literals (f-strings)// and the //String ''format()'' Method//. More details in the next section
+<code python>
+>>> # Basic (but quick and efficient) printing
+>>> year = 1984
+>>> print(year)
+>>> print('[', year, 'is a famous book ]')
+[ 1984 is a famous book ]
+>>> # Old style formatting
+>>> print('[ %i is a famous book ]' % (year,))
+[ 1984 is a famous book ]
+>>> print('[ %10i is a famous book ]' % (year,))
+[       1984 is a famous book ]
+>>> print('[ %-10i is a famous book ]' % (year,))
+[ 1984       is a famous book ]
+>>> print('[ %010i is a famous book ]' % (year,))
+[ 0000001984 is a famous book ]
+>>> # Formatted string literals (f-strings)
+>>> print(f'[ {year} is a famous book ]')
+[ 1984 is a famous book ]
+>>> print(f'[ {year=} is a famous book ]')
+[ year=1984 is a famous book ]
+>>> print(f'[ {year:10} is a famous book ]')
+[       1984 is a famous book ]
+>>> print(f'[ {year:<10} is a famous book ]')
+[ 1984       is a famous book ]
+>>> print(f'[ {year:010} is a famous book ]')
+[ 0000001984 is a famous book ]
+>>> print(f'[ {year:10.2f} is a famous book (yes, {year}!) ]')
+[    1984.00 is a famous book (yes, 1984!) ]
+>>> # The String format() Method
+>>> print('[ {} is a famous book ]'.format(year))
+[ 1984 is a famous book ]
+>>> print('[ {:10} is a famous book ]'.format(year))
+[       1984 is a famous book ]
+>>> print('[ {:<10} is a famous book ]'.format(year))
+[ 1984       is a famous book ]
+>>> print('[ {:010} is a famous book ]'.format(year))
+[ 0000001984 is a famous book ]
+>>> print('[ {:10.2f} is a famous book  (yes, {}!) ]'.format(year, year))
+[    1984.00 is a famous book  (yes, 1984!) ]
+>>> print('[ {title:10.2f} is a famous book  (yes, {title}!) ]'.format(title=year))
+[    1984.00 is a famous book  (yes, 1984!) ]
+>>> print('[ {title:10.2e} is a famous book ]'.format(title=year))
+[   1.98e+03 is a famous book ]</code>
+=== String formatting references ===
+  * [[https://docs.python.org/3/tutorial/inputoutput.html#formatted-string-literals|Formatted String Literals]] (//f-strings//)
+    * Available in Python >= 3.6
+    * [[https://docs.python.org/3/reference/lexical_analysis.html#f-strings|More documentation]]
+    * [[https://docs.python.org/3/library/string.html#formatspec|Format Specification Mini-Language]]
+      * See also the [[https://pyformat.info/|PyFormat site]]
+  * [[https://docs.python.org/3/tutorial/inputoutput.html#the-string-format-method|The String format() Method]]
+    * [[https://docs.python.org/3/library/string.html#formatspec|Format Specification Mini-Language]]
+      * See also the [[https://pyformat.info/|PyFormat site]]
+  * [[https://pyformat.info/|PyFormat site]]: string formatting using the //old style// and the //String ''format()'' method//
+    * <wrap hi>Hint</wrap>: this can also be used as an **easy documentation for //f-strings// format**!
+  * [[https://docs.python.org/3/tutorial/inputoutput.html#the-string-format-method|Old string formatting]]
 ==== Splitting (complex) strings ====
@@ Line 544: / Line 635: @@
 A few notes for a future section or page about about //data representation// (bits and bytes) on disk and in memory, vs //data format//
-FIXME Add parts (pages 28 to 37) of this [[https://wiki.lsce.ipsl.fr/pmip3/doku.php/other:python:jyp_steps#part_2|old tutorial]] to this section
+FIXME Add parts (pages 28 to 37) of this [[http://www.lsce.ipsl.fr/Phocea/file.php?class=page&file=5/pythonCDAT_jyp_2sur2_070306.pdf|old tutorial]] to this section
 ==== Base notions ====

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