Use fake Camera when picamera is not found

photoboite.py

@@ -2,8 +2,56 @@
 
 import io, os, sys, time, pygame
 
+try:
     import picamera
 
+    class Camera:
+        def __init__(self, rect):
+            self.rect = rect
+            self.img = pygame.transform.scale(pygame.image.load('tournesol.jpg'), (self.rect.width, self.rect.height))
+            self.camera = picamera.PiCamera()
+            self.camera.led = False
+            self.camera.resolution = (self.rect.width, self.rect.height)
+            self.rgb = bytearray(self.rect.width * self.rect.height * 4)
+
+        def close(self):
+            self.camera.close()
+
+        def take(self, name):
+            self.camera.capture(name + '.jpg')
+            print('Take picture! ' + name)
+
+        def stream(self):
+            stream = io.BytesIO()
+            self.camera.capture(stream, use_video_port=True, format='rgba', resize=(self.rect.width, self.rect.height))
+            stream.seek(0)
+            stream.readinto(self.rgb)
+            stream.close()
+            img = pygame.image.frombuffer(self.rgb, (self.rect.width, self.rect.height), 'RGBA')
+
+            return pygame.transform.flip(img, True, False)
+
+        def draw_on(self, screen):
+            screen.blit(self.stream(), self.rect)
+
+
+except:
+    class Camera:
+        def __init__(self, rect):
+            self.rect = rect
+            self.img = pygame.transform.scale(pygame.image.load('tournesol.jpg'), (self.rect.width, self.rect.height))
+
+        def close(self):
+            pass
+
+        def take(self, name):
+            print('Take picture! ' + name)
+
+        def draw_on(self, screen):
+            screen.blit(self.img, self.rect)
+
+
+
 class Button:
     def __init__(self, size, topleft):
         self.up_image = pygame.image.load('button-up.png').convert_alpha()
@@ -118,36 +166,6 @@ class Photo:
         return self
 
 
-class Camera:
-    def __init__(self, rect):
-        self.rect = rect
-        self.img = pygame.transform.scale(pygame.image.load('tournesol.jpg'), (self.rect.width, self.rect.height))
-        self.camera = picamera.PiCamera()
-        self.camera.led = False
-        self.camera.resolution = (self.rect.width, self.rect.height)
-        self.rgb = bytearray(self.rect.width * self.rect.height * 4)
-
-    def close(self):
-        self.camera.close()
-
-    def take(self, name):
-        self.camera.capture(name + '.jpg')
-        print('Take picture! ' + name)
-
-    def stream(self):
-        stream = io.BytesIO()
-        self.camera.capture(stream, use_video_port=True, format='rgba', resize=(self.rect.width, self.rect.height))
-        stream.seek(0)
-        stream.readinto(self.rgb)
-        stream.close()
-        img = pygame.image.frombuffer(self.rgb, (self.rect.width, self.rect.height), 'RGBA')
-
-        return pygame.transform.flip(img, True, False)
-
-    def draw_on(self, screen):
-        screen.blit(self.stream(), self.rect)
-
-
 class Photoboite:
     def __init__(self):
         self.screen = self.screen()