python-pandasFill empty data frame values with fillna()

Usage example

import pandas as pd

data = pd.DataFrame({
  'Vendor': ['US', 'US', 'US', 'KR', 'KR'],
  'Phone': ['ip5', 'ip6', 'ip8', 'sms', 'xi'],
  'Phone Price': [204, 304, None, 405, None]
})

data = data.fillna(100)

print(data)

output

  Vendor Phone  Phone Price
0     US   ip5        204.0
1     US   ip6        304.0
2     US   ip8        100.0
3     KR   sms        405.0
4     KR    xi        100.0