Example of implementation of Pandas adding rows to existing data frames

import pandas as pd

# Create a data framedata = ({
    'company_url': ['/billguard', '/tradesparq', '/sidewalk', '/pangia', '/thinknum'],
    'company': ['BillGuard', 'Tradesparq', 'Sidewalk', 'Pangia', 'Thinknum'],
    'tag_line': ['The fastest smartest way to track your spendin...', 'The world''s largest social network for global ...', 'Hoovers (D&B) for the social era', 'The Internet of Things Platform: Big data mana...', 'Financial Data Analysis Thinknum is a powerful web platform to value c...'],
    'product': ['BillGuard is a personal finance security app t...', 'Tradesparq is  meets LinkedIn. Trad...', 'Sidewalk helps companies close more sales to s...', 'We collect and manage data from sensors embedd...', 'Thinknum is a powerful web platform to value c...'],
    'data': ['New York City · Financial Services · Security ...', 'Shanghai · B2B · Marketplaces · Big Data · Soc...', 'New York City · Lead Generation · Big Data · S...', 'San Francisco · SaaS · Clean Technology · Big ...', 'New York City · Enterprise Software · Financia...']
})

# Create a list of big data company line numberscomp_rows = [1, 2, 3]

# Create an empty data frame to store filtered company informationbigdata_comp = (data=None,columns=['company_url','company','tag_line','product','data'])

# Try adding rows to existing dataframefor count, item in enumerate(()):
    for number in comp_rows:
        if int(count) == int(number):
            bigdata_comp.append(item)

# Print error messageprint(bigdata_comp)

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-234-1e4ea9bd9faa> in <module>()
      4     for number in comp_rows:
      5         if int(count) == int(number):
----> 6             bigdata_comp.append(item)
      7 

/Library/Frameworks//Versions/2.7/lib/python2.7/site-packages/pandas/core/ in append(self, other, ignore_index, verify_integrity)
   3814         from  import concat
   3815         if isinstance(other, (list, tuple)):
-> 3816             to_concat = [self] + other
   3817         else:
   3818             to_concat = [self, other]

TypeError: can only concatenate list (not "tuple") to list

# Use the .loc() method to select a specific rowfiltered_data = [comp_rows]

# Add rows to new dataframebigdata_comp = ([bigdata_comp, filtered_data], ignore_index=True)

# Print a new data frameprint(bigdata_comp)

# Create a list of big data company informationbigdata_list = []
for number in comp_rows:
    bigdata_list.append([number])

# Convert list to data framebigdata_comp = (bigdata_list, ignore_index=True)

# Print a new data frameprint(bigdata_comp)