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

# In[2]:


q2 = """
Michael

dawn

lock hart ln

Dublin

--

kate

Nan

webster st

king city

--

raj

zakjg

late Road

Toronto

--

dave

porter

Rock Ave

nobleton

--

John

Doe

round road

schomberg
"""

letter = """
[fname] [lname]
[street]
[city]

Dear [fname]:

   As a fellow citizen of [city], you and all your neighbours 
on [street] are invited to a celebration this Saturday at 
[city]'s Central Park. Bring beer and food!
"""


# In[4]:


with open('q2.txt', 'w') as f:
    f.write(q2)
f.close()

with open('letter.txt', 'w') as f:
    f.write(letter)
f.close()


# In[5]:


letter = ''
q2 = ''

with open('letter.txt', 'r') as f:
    letter = f.read()
f.close()

with open('q2.txt', 'r') as f:
    q2 = f.read()
f.close()


# In[6]:


q2


# In[7]:


letter


# In[8]:


def cleanData(query):
     return [item.strip().split('\n\n') for item in query.split('--')]


# In[9]:


def writeLetter(template, variables, replacements):
    # replace ith variable with ith replacement variable
    for i in range(len(variables)):
         template = template.replace(variables[i], replacements[i]) 
    return template


# In[10]:


data = cleanData(q2)


# In[11]:


data


# In[12]:


variables = ['[fname]', '[lname]', '[street]', '[city]']


# In[13]:


letters = [writeLetter(letter, variables, person) for person in data]


# In[14]:


for i in letters:
    print i


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