Ivy questions

• Merging data in Open/LibreOffice Calc
• Text processing with two files
• Equality of objects in Python [duplicate]
• Reverse DNS lookup in Python
• Getting the internal IP of an instance in an auto-scaling group
• Checking for IP addresses
• Very simple concurrent programming in Python
• A safe, atomic file-copy operation
• UnicodeEncodeError when writing to a file
• Fitness proportionate selection (roulette wheel selection) in Python

Ivy answers