#!/usr/bin/env python
# coding: utf-8

# # Problem 1
# Import NumPy under the alias `np`.

# In[ ]:





# # Problem 2
# Import pandas under the alias `pd`.

# In[ ]:





# # Problem 3
# Using `df1` and `df2` as specified below, merge them using the key `key`. Specify `how = inner` as an argument.

# In[ ]:


df1 = pd.DataFrame({'key': ['foo', 'bar', 'baz', 'foo'],
                    'value': [1, 2, 3, 5]})
df2 = pd.DataFrame({'key': ['foo', 'bar', 'baz', 'foo'],
                    'value': [5, 6, 7, 8]})


# In[ ]:


#Solution goes here