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replace with regex capture group

str.replace(/(.*name="w+)d+(w+".*)/, "$1!NEW_ID!$3")
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replace with regex capture group

str.replace(/(?<=name="w+)d+(?=w+")/, '!NEW_ID!') // look behind & look ahead
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replace with regex capture group

print(readline().replace(/(d+)(.) ?/g,(a,b,c)=>c.repeat(b)))
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