import pandas as pd
#body of code
writer = pd.ExcelWriter(filename, engine='xlsxwriter')

#Import Packages
import pandas as pd
from sklearn import linear_model

#Create an Array of the Package names
imports = ['pandas','sklearn']

#find installed package version on local machine for each imported package
import pip #needed to use the pip functions
for i in pip.get_installed_distributions(local_only=True):
    for ii in imports:
        if str(i).find(str(ii)) != -1:
            print(str(i))

#pandas 0.18.1 is found but scikit-learn 0.17.1  is not

print(list(item[1] for item in pkgutil.iter_modules()))