To convert gallons to pints, you can use the conversion factor that 1 gallon is equal to 8 pints.
Given that a container holds 4 gallons of juice, you can calculate the number of pints as follows:
\[ 4 \text{ gallons} \times 8 \text{ pints/gallon} = 32 \text{ pints} \]
Therefore, the container holds 32 pints of juice.