Add changes to File IO lesson, readme and whats next section

Author: kochaika

File input output/Open file/input1.txt

@@ -1 +1 @@
-This is the entire file.
+outfile.txt

File input output/Open file/open_file.py

@@ -4,9 +4,9 @@
 
 
 with open('input1.txt', 'r') as file:
-    print(file.read())
+    outfile_name = file.readline()
 
 
-outfile = open('outfile.txt', 'w')  # Opening the file in write mode (using `w` argument)
+outfile = open(outfile_name, 'w')  # Opening the file in write mode (using `w` argument)
 outfile.write('Hello World')  # Writing to the file, the write() method is explained later.
 outfile.close()

File input output/Open file/task-info.yaml

@@ -1,20 +1,23 @@
 type: edu
 files:
-- name: open_file.py
-  visible: true
-  placeholders:
-  - offset: 152
-    length: 37
-    placeholder_text: '# Open the file input1.txt in read mode using the with statement'
-  - offset: 397
-    length: 15
-    placeholder_text: '# Close the output file!'
-- name: input.txt
-  visible: true
-- name: input1.txt
-  visible: true
-- name: tests/__init__.py
-  visible: false
-- name: tests/test_task.py
-  visible: false
-feedback_link: https://docs.google.com/forms/d/e/1FAIpQLSfRlDlldKfuq-cHMNFfHMER61P1PRIan7KG6yp1GvaweDI7GA/viewform?usp=pp_url&entry.2103429047=File+Input+Output+/+Open+file
+  - name: open_file.py
+    visible: true
+    placeholders:
+      - offset: 152
+        length: 37
+        placeholder_text: '# Open the file input1.txt in read mode using the with statement'
+      - offset: 242
+        length: 12
+        placeholder_text: ???
+      - offset: 408
+        length: 15
+        placeholder_text: '# Close the output file!'
+  - name: input.txt
+    visible: true
+  - name: input1.txt
+    visible: true
+  - name: tests/__init__.py
+    visible: false
+  - name: tests/test_task.py
+    visible: false
+feedback_link: https://docs.google.com/forms/d/e/1FAIpQLSfRlDlldKfuq-cHMNFfHMER61P1PRIan7KG6yp1GvaweDI7GA/viewform?usp=pp_url&entry.2103429047=File+Input+Output+/+Open+file

File input output/Open file/task.md

@@ -28,8 +28,12 @@ True
 **Important**: If you’re not using the `with` keyword, then you should call `f.close()` to close the file and 
 free up any system resources used by it. You cannot use the file object after it is closed, whether by a `with` statement or by calling `f.close()`.
 
-In the code editor, open the file `input1.txt` in read mode properly using the `with` statement. Check out the
-name that is used for the file on the next line and use it. Afterwards, close the output file `outfile` that was opened. 
+For more structured and detailed information, you can refer to [this Hyperskill knowledge base page](https://hyperskill.org/learn/step/8691).
+
+### Task
+- In the code editor, open the file `input1.txt` in read mode properly using the `with` statement. `input1.txt` file stores the name of the file where the string `Hello World` should to be output. Reading this name is already implemented in the `outfile_name` variable.
+- Open the file with `outfile_name` name in writing mode
+- Afterward, close the output file that was opened.
 
 After running your code, check out the output file that appeared in the course view among the other files.
 

File input output/Open file/tests/test_task.py

@@ -11,13 +11,18 @@ def test_out(self):
                 from open_file import outfile
             output = f.getvalue().split('\n')
 
-            expected, actual = 8, len(output)
+            expected, actual = 6, len(output)
             self.assertEqual(expected, actual, msg='Please do not remove or add any print statements.')
             self.assertTrue(outfile.closed, msg='The outfile file is not closed.')
+            with open('outfile.txt', 'r') as file:
+                hello = file.readline()
+                self.assertEqual('Hello World', hello, msg='Please do not remove write Hello World instruction')
 
         except ImportError:
             self.assertTrue(False, msg='Please do not rename any variables.')
 
         except NameError:
             self.assertTrue(False, msg='You should open input1.txt as a file.')
 
+        except FileNotFoundError:
+            self.assertTrue(False, msg='Output file name should be used from outfile_name variable.')

File input output/Read all lines/task.md

@@ -3,4 +3,6 @@
 ### Task
 Read all lines from the file input.txt into the list called `lines_list`. There are at least two different ways to do it.
 
+For more structured and detailed information, you can refer to [this Hyperskill knowledge base page](https://hyperskill.org/learn/step/8139#readlines).
+
 <div class="hint">Two possible solutions are discussed in the previous task.</div>

File input output/Read file/task.md

@@ -50,10 +50,11 @@ Second line of the file
 
 If you want to read all the lines of a file in a list, you can also use `list(f)` or `f.readlines()`.
 
-
 For more details, check out the section [Methods of File Objects](https://docs.python.org/3/tutorial/inputoutput.html#methods-of-file-objects) in Python Tutorial.
 
+For more structured and detailed information, you can also refer to [this Hyperskill knowledge base page](https://hyperskill.org/learn/step/8139).
 
+### Task
 Print the contents of "input.txt" to output by iterating over the lines of the file and printing each one.
 Then print only the first line of "input1.txt".
 

File input output/What next/task.md

@@ -1,14 +1,28 @@
 Congratulations, you made it to the end of the course! We hope you enjoyed it.
 
+### Feedback 
+We would really appreciate it if you could take a few minutes to answer [our survey](https://surveys.jetbrains.com/s3/course-feedback-python-intro). Your feedback will help us improve this course and make it relevant for future students.
+
 If you would like to leave general feedback – write us a review on the course’s Marketplace [page](https://plugins.jetbrains.com/plugin/16630-introduction-to-python/reviews).
-If you want to contribute, feel free to create a pull request or an issue in the course’s [GitHub repo](https://github.com/jetbrains-academy/introduction_to_python).
 
 ### What next?
-
 Now that you’ve explored the basics of Python programming, you can dive deeper and polish your new skills! Here are some options for you:
 - Learn about the most widely used Python library with our [course on NumPy](https://plugins.jetbrains.com/plugin/18302-python-libraries--numpy).
 - Find out how to build an [AMazing](https://plugins.jetbrains.com/plugin/17519-amazing) maze with Python.
 - Discover the basics of [Machine Learning](https://plugins.jetbrains.com/plugin/18392-machine-learning-101).
 - Check out the projects in the [Python Core](https://hyperskill.org/tracks/2) or [Python for Beginners](https://hyperskill.org/tracks/6) track at JetBrains Academy on Hyperskill.
 
+You can also find a huge number of other courses in the [JetBrains Academy catalog](https://academy.jetbrains.com/)!
+
 Stay tuned for new courses and updates!
+
+### Several reasons to try JetBrains Academy now
+- At the moment, 37 Python projects and 348 topics are available for learning, and the number keeps growing.
+  Other programming languages, such as Kotlin and Java, are also available.
+- Projects of varying difficulty levels provide a flexible learning experience for all.
+- Comprehensive learning tracks are augmented with a detailed [Knowledge Map](https://hyperskill.org/knowledge-map?utm_source=ide&utm_medium=ide&utm_campaign=ide&utm_content=last-task).
+- Learn anywhere: you can start learning on your tablet or mobile phone via a browser and continue on your 
+  laptop or PC; you can even build the projects [right in your IDE](https://hyperskill.org/plugin#python?utm_source=ide&utm_medium=ide&utm_campaign=ide&utm_content=last-task).
+
+### Contribution
+If you want to contribute, feel free to create a pull request or an issue in the course’s [GitHub repo](https://github.com/jetbrains-academy/introduction_to_python).

File input output/Write to file/task-info.yaml

@@ -7,14 +7,13 @@ files:
   placeholders:
   - offset: 74
     length: 3
-    placeholder_text: add modifier
+    placeholder_text: modifier
   - offset: 89
     length: 33
-    placeholder_text: "# On a new line in  \"output.txt\", add all elements from the\
-      \ zoo list, joined by \" and \""
+    placeholder_text: "# Write a new line symbol into a file and all elements from the zoo list, joined by \" and \""
   - offset: 127
     length: 27
-    placeholder_text: '# Add the number to the output as well'
+    placeholder_text: '# Write a new line symbol and number-variable value into a file'
 - name: tests/__init__.py
   visible: false
 - name: tests/test_task.py

File input output/Write to file/task.md

@@ -36,6 +36,9 @@ f.write('\n' + 'string,' + ' ' + 'another string')
 ```
 This will add a new line and write `'string, another string'`.
 
+For more structured and detailed information, you can refer to [this Hyperskill knowledge base page](https://hyperskill.org/learn/step/8334).
+
+### Task
 In the code editor, **append** one new line to `output.txt` with all elements from the `zoo` list separated by `' and '`. 
 Use the <code>' and '.join(lst)</code> syntax to join the list elements into the required string. Afterwards, 
 append another line with the `number` to the same output file.
@@ -44,20 +47,3 @@ append another line with the `number` to the same output file.
 <div class='hint'>Use the <code>write()</code> method.</div>
 <div class='hint'>Convert <code>number</code> into a string before writing.</div>
 <div class="hint">Add <code>\n</code> at the beginning of each string to write so that it eds up a separate line.</div>
-
-
-
-## What's next?
-
-Now, once you have mastered the basics of Python, we bet that you’re wondering what to do next. 
-We recommend checking out [JetBrains Academy](https://hi.hyperskill.org?utm_source=ide&utm_medium=ide&utm_campaign=ide&utm_content=last-task). 
-Here are several reasons to try JetBrains Academy now:
-
-- At the moment, 37 Python projects and 348 topics are available for learning, and the number keeps growing.
-  Other programming languages, such as Kotlin and Java, are also available.
-- Projects of varying difficulty levels provide a flexible learning experience for all.
-- Comprehensive learning tracks are augmented with a detailed [Knowledge Map](https://hyperskill.org/knowledge-map?utm_source=ide&utm_medium=ide&utm_campaign=ide&utm_content=last-task).
-- Learn anywhere: you can start learning on your tablet or mobile phone via a browser and continue on your 
-  laptop or PC; you can even build the projects [right in your IDE](https://hyperskill.org/plugin#python?utm_source=ide&utm_medium=ide&utm_campaign=ide&utm_content=last-task).
-
-Join JetBrains Academy [here](https://hyperskill.org/onboarding?track=python&utm_source=ide&utm_medium=ide&utm_campaign=ide&utm_content=last-task) and try it yourself!

README.md

@@ -10,5 +10,9 @@
 
   <p>Have fun and good luck!</p>
 
-  <p>P.S. Want to contribute? Feel free to send a pull request to this course’s
-  <a href=”https://github.com/jetbrains-academy/introduction_to_python”>git repo</a>.</p>
+## Want to know more?
+If you have questions about the course or the tasks or if you find some errors,
+you can ask questions and participate in discussions in repository [issues](https://github.com/jetbrains-academy/introduction_to_python/issues).
+
+## Contribution
+Please be sure to review the [project's contributing guidelines](./contributing.md) to learn how to help the project.

contributing.md

@@ -0,0 +1,37 @@
+# What this repository is
+This repository contains sources of the Introduction to Python course.
+
+# Contributing
+We love contributions!
+We are happy to see fixes of the existing bugs and tasks and tests mistakes.
+The current tasks can be found in the [open issues](https://github.com/jetbrains-academy/introduction_to_python/issues) in the project.
+If you have some questions or find bugs or mistakes, please do not hesitate to open new ones.
+
+Please, add a comment to the issue, if you're starting work on it.
+
+If you add some common functionality, e.g. for the test system, it is important to add comments to describe new behaviour.
+This will help other developers and users to use them correctly.
+
+## Submitting patches
+The best way to submit a patch is to [fork the project on GitHub](https://help.github.com/articles/fork-a-repo/)
+and then send us a [pull request](https://help.github.com/articles/creating-a-pull-request/)
+to the `master` branch via [GitHub Pull requests](https://github.com/jetbrains-academy/introduction_to_python/pulls).
+
+If you create your own fork, it might help to enable rebase by default
+when you pull by executing
+``` bash
+git config --global pull.rebase true
+```
+This will avoid your local repo having too many merge commits
+which will help keep your pull request simple and easy to apply.
+
+## Checklist
+Before submitting the pull request, make sure that you can say "YES" to each point in this short checklist:
+
+-[ ] You provided the link to the related issue(s) from the repository;
+-[ ] You made a reasonable amount of changes related only to the provided issues;
+-[ ] You can explain changes made in the pull request;
+-[ ] You ran the build locally and verified new functionality/fixed bugs;
+-[ ] You ran related tests locally (or add new ones) and they passed;
+-[ ] You do not have merge conflicts in the pull request.
+-[ ] You've made sure that all tests in [GitHub Actions](https://github.com/jetbrains-academy/introduction_to_python/tree/master/.github/workflows) pass