Centroid Point inside wrong Polygon [duplicate]

Question

In this algorithm I need to create points inside every polygon. The easy solution I was thought was using the centroid. With some help of the community we reach in this algorithm

from qgis.PyQt.QtGui import *
from qgis.PyQt.QtCore import *
import processing


source_layer = iface.addVectorLayer("folder/Polygon.shp", "Setor", "ogr")
crs = source_layer.crs().toWkt()

# Define additional attributes already on the layer level
centroid_layer = QgsVectorLayer('Point?field=cd_geocodi:string&crs=' + crs, 'MyPoint' , 'memory')

centroid_layer.startEditing()
# Loop over all features
points = 50
p = 1
while p <= points:
#reading every feature and getting those centroid and one attribute
    for source_feature in source_layer.getFeatures():
        geometry = source_feature.geometry()
        centroid = geometry.centroid()
        name = source_feature.attribute("CD_GEOCODI") # select the attribute

        # Create the new feature with the fields of the memory layer
        # And set geometry and attribute before adding it to the target layer
        centroid_feature = QgsFeature(centroid_layer.fields())
        centroid_feature.setGeometry(centroid)
        centroid_feature['cd_geocodi'] = name
        centroid_layer.addFeature(centroid_feature)
    p += 1
centroid_layer.commitChanges()

# Add the layer to the registry
QgsMapLayerRegistry.instance().addMapLayer(centroid_layer)


#https://docs.qgis.org/2.8/en/docs/user_manual/processing_algs/qgis/vector_analysis_tools/countpointsinpolygonweighted.html

#counting points inside polygons

Result = "folder/output.shp"
processing.runalg("qgis:countpointsinpolygon", source_layer, centroid_layer, 'NUMPOINTS', Result)
iface.addVectorLayer(Result, 'result', 'ogr')

But depending on how unusual is the polygon the centroid is calculated in other polygon, like below:

I found answers like https://gis.stackexchange.com/a/259185/104521 who makes me think about create a for inside another for, to use some similar logic to filter the polygon area and insert a random point inside. I had try to adapt these algorithms, but I did not make it. Probably because my skills are limited.

Can someone help me?