As can be seen in the image, the plant has a pink stem, pale green leaves, and grows close to the ground. It is also probably native to the Indian Subcontinent. (I currently live in Southern India.)
Any help would be greatly appreciated.
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OK I will start the ball rolling with Pokeweed. Reasons favouring this choice are the red petioles; note that in the Ohio weedguide description that the redness goes up the leaf stem but is visible on the underside only. Leaf is entire (no jaggies) and oval shaped, uncomplicated.
Against this choice (although the images offered are of a very young plant) are that the veining is not as complicated as in the Ohio description, also the leaf stems are clasping the main stem in the offered image, sort of like rhubarb. There is a curious hook on one of the plant petioles which is an unusual place to have a growth.
It should be easy to dismiss this as pokeweed later, if no "large fleshy white taproot" appears. Not sure why pokeweed would be in a pot.