'helloin 'hello worldproduces true it is important to note that the in operator does not support wildcards or any kind of pattern matching for thisyou need to use library module such as the re module for regular expression patterns the for in operator iterates over all the elements of sequence and is described further in "program structure and control flow len(sreturns the number of elements in sequence min(sand max(sreturn the minimum and maximum values of sequencerespectivelyalthough the result may only make sense if the elements can be ordered with respect to the operator (for exampleit would make little sense to find the maximum value of list of file objectssum(ssums all of the items in but usually works only if the items represent numbers an optional initial value can be given to sum(the type of this value usually determines the result for exampleif you used sum(itemsdecimal decimal( ))the result would be decimal object (see more about the decimal module in "mathematics"strings and tuples are immutable and cannot be modified after creation lists can be modified with the following operatorsoperation description [ix [ :jr [ : :strider del [idel [ :jdel [ : :strideindex assignment slice assignment extended slice assignment deletes an element deletes slice deletes an extended slice the [ix operator changes element of list to refer to object xincreasing the reference count of negative indices are relative to the end of the listand attempts to assign value to an out-of-range index result in an indexerror exception the slicing assignment operator [ :jr replaces element kwhere < jwith elements from sequence indices may have the same values as for slicing and are adjusted to the beginning or end of the list if they're out of range if necessarythe sequence is expanded or reduced to accommodate all the elements in here' an examplea [ , , , , [ [ , , , , [ : [ , [ , , , , [ : [- ,- ,- [ , , ,- ,- ,- , [ :[ [ , , slicing assignment may be supplied with an optional stride argument howeverthe behavior is somewhat more restricted in that the argument on the right side must have exactly the same number of elements as the slice that' being replaced here' an examplea [ , , , , [ :: [ , [ :: [ , , [ , , , , valueerror only two elements in slice on left the del [ioperator removes element from list and decrements its reference count del [ :jremoves all the elements in slice stride may also be suppliedas in del [ : :stridef lib fl ff