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The syntax in Python is simple, but sometimes it is confusing. Friends who have not studied systematically do not understand it very well. Today I will tell you about the double colon in Python.
The colon ":" is used to define sharding and step size
For example:
list1 [:3:2], tul1[3:6:2] (note that 3:6 is the index 3 to 5, excluding 6)
Double colon "::" is used to define Reverse order, but the new version of python is no longer used.
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