Colon in Python list index

Question

I m new to Python  I see   used in list indices especially when it s associated with function calls    Python 2 7 documentation suggests that lists append translates to a len a       x   Why does one need to suffix len a  with a colon   I understand that   is used to identify keys in dictionary

User · Answer

a len a     - This gets you the length of a to the end  It selects a range  If you reverse    a  len a    it will get you the beginning to whatever is len a

User · Answer

slicing operator  http   docs python org tutorial introduction html strings and scroll down a bit

User · Answer

is the delimiter of the slice syntax to  slice out  sub-parts in sequences    start end    1 5  is equivalent to  from 1 to 5   5 not included   1   is equivalent to  1 to end   len a    is equivalent to  from length of a to end    Watch https   youtu be tKTZoB2Vjuk t 41m40s at around 40 00 he starts explaining that   Works with tuples and strings  too

[python] Colon (:) in Python list index

Examples related to python