Pygame .Rect won't "collide" with mouse - mouseevent

Question

I am working on a simple game and with small circle "systems". I would like to be able to click each system so that I can do more with it later in game but I am having difficulty recognizing only a single click. I pass the randomly generated coords to a dictionary and then the collision for each rect should be checked with the mouse position but for some reason that is not working anymore. Any help is appreciated.
Here is some of the more relevent code.
for i in range(NumSystems):
SysSize = random.randint(3,SystemSize)
SysY = random.randint(SystemSize*2,GVPHEIGHT-SystemSize*2)
SysX = random.randint(OverLayWidth+SystemSize*2,WINWIDTH-SystemSize*2)
SysList[str('SysNum')+str(i)] = ((SysSize,(SysX,SysY)))
SysCoords[str('SysNum')+str(i)] = pygame.draw.circle(DISPLAYSURF, WHITE, (SysX,SysY), SysSize, 0)
pygame.display.update()
#time.sleep(.25)
#Code above is putting the random Coords into a dictionary.
while True:
MousePos=mouse.get_pos()
for event in pygame.event.get():
if event.type == QUIT:
pygame.QUIT()
sys.exit()
elif event.type == KEYDOWN:
# Handle key presses
if event.key == K_RETURN:
#Restarts the map
main()
elif event.type == MOUSEBUTTONDOWN:
if event.button == 1:
SysClicky(MousePos)
if SysClicked == True:
print('Clicked System')
elif SysClicked == False:
print('Something Else Clicked')
def SysClicky(MousePos):
for i in range(NumSystems):
print('Made to the SysClicky bit')
if SysCoords['SysNum'+str(i)].collidepoint(MousePos):
SysClicked = True
print(SysClicked)
return SysClicked
else:
SysClicked = False
return SysClicked

Answer 1

I'm not clear on What SysList / SysX/Y, SysCoords are. Does it hold width,height of the items in SysCoords? If so, that's already in Rect()
below systems is your dict of Rects.
Here's the code:
def check_collisions(pos):
# iterate dict, check for collisions in systems
for k,v in systems.items():
if v.collidepoint(pos):
print("clicked system:", k)
return
print("clicked something else")
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
elif event.type == MOUSEBUTTONDOWN:
if event.button == 1:
check_collisions(event.pos)
# render

Answer 2

Pygame rect objects have a collidepoint inbuilt method which takes a coordinate and returns a boolean based on collision. You can input the mouses coordinate into function like so:
MousePos=mouse.get_pos()
if mySurface.get_rect().collidepoint(MousePos):
doSomething()