Learning Circle : python #3 - ex15 ~ ex21

youngjin.han/python.org

@@ -1,3 +1,32 @@
+* 2020-05-22
+** note
+   - ex15.py
+     - The argument method is better than using stdin. becouse bash-completion could be used.
+     - python3.8 shell
+       - >>> filename=input()
+       - ex15_sample.txt
+       - >>> txt = open(filename)
+       - >>> txt_script = txt.read()
+       - >>> print(txt_script)
+       - This is stuff I typed into a file.
+       - It is really cool stuff.
+       - Lots and lots of fun to have in here
+   - ex16.py
+     - 'w' is to open a file on write mode.
+     - If a file is openned with 'w', target.truncate() should not be need. the 'w' mode always overwrite a file.
+   - ex17.py
+     - cat is concatenate files to stdout
+     - If file.close() is not called, the file which is openned by python chould not be modified on orther programs.
+   - ex18.py
+     - none
+   - ex19.py
+     - none
+   - ex20.py
+     - file.seek is to move to new file posotion
+   - ex21.py
+     -
+   - ex22.py
+     -
 * 2020-05-20
 ** note
    - ex8.py
@@ -15,7 +44,6 @@
      - none
    - ex14.py
      - none
-
 * 2020-05-18
 ** note
    - ex1.py