Python instead of python3

README.md

@@ -16,22 +16,22 @@ The first step is to clone the repository:
 git clone https://gitea.tforgione.fr/tforgione/pytron
 ```
 
-Then, ensure you have `python3` and `pygame` installed. You can test you have
+Then, ensure you have `python` and `pygame` installed. You can test you have
 everything by executing the following command:
 ```
-python3 -c "import pygame"
+python -c "import pygame"
 ```
 
-  - if you get a `python3: command not found`, it means you don't have
-    `python3`, you can install it on ubuntu like so:
+  - if you get a `python: command not found`, it means you don't have
+    `python`, you can install it on ubuntu like so:
     ``` sh
-    sudo apt install python3
+    sudo apt install python
     ```
 
   - if you get a `ImportError: No module named 'pygame'`, it means you don't
     have `pygame`, you can install it on ubuntu like so:
     ``` sh
-    sudo apt install python3-pip
+    sudo apt install python-pip
     sudo pip3 install pygame
     ```
 
@@ -112,7 +112,7 @@ It contains an `np.array` of two dimensions containing two rows and two columns
 more that what specify, because is automatically adds border to your map. This
 means that when you run
 
-``` python3
+``` python
 my_map = Map(5, 5, Case.EMPTY, Case.WALL)
 ```
 
@@ -127,7 +127,7 @@ modify the border with the getters.
 
 To use the getters, you can do like this:
 
-``` python3
+``` python
 my_map = Map(5, 5, Case.EMPTY, Case.WALL)
 
 # Sets the top left corner of the map to PLAYER_ONE_HEAD
@@ -136,14 +136,14 @@ my_map[0, 0] = Case.PLAYER_ONE_HEAD
 ```
 
 You can easily clone a map:
-``` python3
+``` python
 my_map = Map(5, 5, Case.EMPTY, Case.WALL)
 my_second_map = my_map.clone() # Clones the whole map
 ```
 
 If you want to clone the array of a map and apply a function to it at the same
 time, you can do like this:
-``` python3
+``` python
 def my_function(x):
     return x + 1
 
@@ -156,7 +156,7 @@ my_map.apply(my_function)
 At any moment, you can get a reference to the `np.array` of the map by using
 the `array` method:
 
-``` python3
+``` python
 my_map = Map(5, 5, Case.EMPTY, Case.WALL)
 my_array = my_map.array()
 my_array[0][0] = ... # Modifies the top left tile of the border of the map
@@ -173,7 +173,7 @@ Be careful: when you get a reference to an np-array, you need to remember:
 If you wan to modify an np-array without modifying the map, you can use the
 `clone_array` method:
 
-``` python3
+``` python
 my_map = Map(5, 5, Case.EMPTY, Case.WALL)
 my_array = my_map.clone_array()
 # Modifying my_array won't modify my_map