import re
 
email = """
2) From: Claire Fitz-Gerald 
   Date: 9/5/2014 9:52 AM
   Subject: NEFS 5 Available Fish
 
   All,
   NEFS 5 has the following fish available for lease/trade:
 
     GB EAST cod: 954 lbs @ $0.83
     GB EAST cod: 1,046 lbs to trade for 1,830 lbs GB WEST cod
     GB blackback: 30,000 lbs @ $0.07
     GOM blackback: 800 lbs @ $0.03
     white hake: 6,322 lbs @ $0.13
     pollock: 22,000 lbs @ $0.015
     redfish: 14,000 lbs @ $0.015
     GB yt: 1,873 lbs @ $1.13
     GB yt: 5,127 lbs to trade for 10,254 lbs SNE yt
"""
 
rx = re.compile(r'(\d[\d,]{3,}) lbs')
weights = rx.findall(email)
print(weights)

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