How can one get second value for Lambert W?

[Bill Bell]

For instance, there are two roots to the equation for which  N(-LambertW(-log(2)/8)/log(2)) is a solution but when I enter this sympy yields just 0.137499628779701.

What can I do to obtain the second value?

TIA.

[Aaron Meurer]

The second argument to LambertW lets you specify the branch. In this
case, the -1 branch gives the other real root:

In [28]: N(-LambertW(-log(2)/8, -1)/log(2))
Out[28]: 5.44490755461021

Aaron Meurer

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[Bill Bell]

Ah! Thank you.