Add spaces: Drillingiseasiernowintheovercastweather.Wedon'thavetouseatarptokeeptheSunaway.

Answer: Drilling is easier now in the overcast weather. We don't have to use a tarp to keep the Sun away.

Add spaces: FortyfeaturesofPythonthatperhapsyoudon'tknow(PyConES2013)

Answer: Forty features of Python that perhaps you don't know (PyConES 2013)

Add spaces: TheMarinaiswithinwalkingdistanceofthecharacteristicneighborhoodofBarcelonetaknownthroughoutthecityforitsseafoodcuisinerestaurantsandbeaches.

Answer:
The Marina is within walking distance of the characteristic neighborhood of Barceloneta known throughout the city for its seafood cuisine restaurants and beaches.