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5 powerful pandas techniques every Python user should know

On a lot of DataFrame objects, the index will typically be an ascending list of numbers. If I have something with dates, I ...
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[Trade catalogs on girder frames ... ]

Includes report on the Unit System of reinforced concrete. https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001 ...