Srimad Bhagavatam Canto 10, Chapter 12, Text 18

SB 10.12.18

drstva tam tadrsam sarve
matva vrndavana-sriyam
vyattajagara-tundena
hy utpreksante sma lilaya
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Upon seeing this demon’s wonderful form, which resembled a great python, the boys thought that it must be a beautiful scenic spot of Vrndavana. Thereafter, they imagined it to be similar to the mouth of a great python. In other words, the boys, unafraid, thought that it was a statue made in the shape of a great python for the enjoyment of their pastimes.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Some of the boys, upon seeing this wonderful phenomenon, thought that it was in fact a python, and they were fleeing from the spot. But others said, “Why are you fleeing? It is not possible that a python like this is staying here. This is a spot of beauty for sporting.” This is what they imagined.
Srimad Bhagavatam Canto 10, Chapter 12, Text 17
Srimad Bhagavatam Canto 10, Chapter 12, Text 19