Date of publication: 2017-09-03 19:45
Return a string which is the concatenation of the strings in iterable. A TypeError will be raised if there are any non-string values in iterable , including bytes objects. The separator between elements is the string providing this method.
The arguments to the range constructor must be integers (either built-in int or any object that implements the __index__ special method). If the step argument is omitted, it defaults to 6 . If the start argument is omitted, it defaults to 5 . If step is zero, ValueError is raised.
eggs should not be distributed to markets until the end of the drug's withdrawal period. It is also recommended to observe the withdrawal period of drugs before poultry slaughter or table egg distribution to avoid antimicrobial resistance and to inform both owners and consumers about the risks of antibiotic residues in egg contents.
Note, the non-operator versions of union() , intersection() , difference() , and symmetric_difference() , issubset() , and issuperset() methods will accept any iterable as an argument. In contrast, their operator based counterparts require their arguments to be sets. This precludes error-prone constructions like set('abc') & 'cbs' in favor of the more readable set('abc').intersection('cbs') .
There are three basic sequence types: lists, tuples, and range objects. Additional sequence types tailored for processing of binary data and text strings are described in dedicated sections.
The following methods on bytes and bytearray objects assume the use of ASCII compatible binary formats and should not be applied to arbitrary binary data. Note that all of the bytearray methods in this section do not operate in place, and instead produce new objects.
What has happened is that [] is a one-element list containing an empty list, so all three elements of [] * 8 are references to this single empty list. Modifying any of the elements of lists modifies this single list. You can create a list of different lists this way:
Return the number of non-overlapping occurrences of substring sub in the range [ start , end ]. Optional arguments start and end are interpreted as in slice notation.