Python vs Ruby

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In favour of ruby

• Ruby allows lambdas that are longer than a single expression
• Ruby doesn't have semantic whitespace. (Especially an issue when working in an interactive session.)
• Ruby functions always return something, so more functions lend themselves to easy, legible chaining
• Ruby doesn't require unnecessary specifications of both self and class to designate a member function
• Ruby interpreter looks for rc files to customize your startup

In favour of Python

• Python's numeric types are 64 bit