Removing characters from columns in data frame

[kiton]

Hi! So, I came up with the following code to extract Twitter data from JSON and create a data frame with several columns:

# Import libraries
import json
import pandas as pd

# Extract data from JSON
tweets = []
for line in open('00.json'):
  try: 
    tweets.append(json.loads(line))
  except:
    pass

# Tweets often have missing data, therefore use -if- when extracting "keys"
tweet = tweets[0]
ids = [tweet['id_str'] for tweet in tweets if 'id_str' in tweet] 
text = [tweet['text'] for tweet in tweets if 'text' in tweet]
lang = [tweet['lang'] for tweet in tweets if 'lang' in tweet]
geo = [tweet['geo'] for tweet in tweets if 'geo' in tweet]
place = [tweet['place'] for tweet in tweets if 'place' in tweet]

# Create a data frame (using pd.Index may be "incorrect", but I am a noob)
df=pd.DataFrame({'Ids':pd.Index(ids),
                'Text':pd.Index(text),
                'Lang':pd.Index(lang),
                'Geo':pd.Index(geo),
                'Place':pd.Index(place)})

# Convert "object" to "string" type
df.Lang.apply(str)
df.Geo.apply(str)

# Select tweets in English and with geo tag
df[(df['Lang']==('en',)) & (df['Geo'] != (None,))]

So far, everything seems more or less fine. 

Now, the problem. 

For example:

"Ids" value is recorded as "(396154642666913792,)" ;
Or "Geo" value is recorded as "({'coordinates': [41.63349811, -93.65831894], 'type': 'Point'},)"

Question: How do I remove the "extra" characters -- i.e., (), {}, 'coordinates':, etc.?

Thank you in advance for help!