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pythondictionaryfor-loopdictionary-comprehension
dayum
dayum

Reputation: 1093

dictionary comprehension in Python

Is there a way to the follwing in dictionary comprehension?

bmcdsreg = {}
for key, val in bms.iteritems():
    bmcdsreg[key] = {}
    for reg in bmmaps.columns:
        bmcdsreg[key][reg]= val*bmmaps[reg]

I have the following version where the keys are interchanged:

bmcdsreg = {reg: {key: val*bmmaps[reg] for key, val in bms.iteritems()}
             for reg in bmmaps.columns}

Upvotes: 1

Views: 57

Answers (1)

Red
Red

Reputation: 27547

Here is how:

bmcdsreg = {
    key: {reg: val * bmmaps[reg] for reg in bmmaps.columns}
    for key, val in bms.items()
}

Upvotes: 1

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