How to set wget -O option with dynamic page name?

Question

linux

wget -O file "url?param1=1¶m2=2" will always write to "file"
wget "url?param1=1¶m2=2" will always write to "url?param1=1¶m2=2"
Interested in writing to files wget_output1.txt , wget_output2.txt etc for each run

Answer 1

make_name()
{
    echo "file_$(date '+%Y-%m')_$1.txt"
}

for i in 1 2 3; do
    wget -O "$(make_name $i)" "https://www.yandex.ru"
done

Result

[[email protected] tmp]$ ls *.txt
file_2017-02_1.txt  file_2017-02_2.txt  file_2017-02_3.txt
[[email protected] tmp]$