https://ithiria894.github.io/python-field-manual/

You're staring at a timer counting down and your brain goes blank on how to sort a dict by value. This is for that moment.

Everything here is copy-paste ready. No fluff. Just patterns that show up in timed coding assessments over and over.

Dict

d = {} # create d [ " key " ] = " value " # set val = d [ " key " ] # get (crashes if missing) val = d . get ( " key " ) # get (returns None if missing) val = d . get ( " key " , " default " ) # get with default del d [ " key " ] # delete " key " in d # check exists # nested dict d [ " user " ] = { " balance " : 0 , " history " : []} d [ " user " ][ " balance " ] += 100

# loop for key , value in d . items (): print ( key , value )

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List

lst = [] # create lst .…