I have problems with my PyCharm (it is running extremely slow) so I decided to change to eclipse. However, the import which worked in PyCharm suddenly don't work in eclipse. I am talking about numpy and tensorflow (which were appropriately installed). 
Please, can anyone can give me a hint?
Found the solution: need to define the same interpreter as in PyCharm. Thanks everyone anyway!
Why Python import works on pycharm but not on eclipse