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  • How can I find the index for a given item in a list?
    Caveats Linear time-complexity in list length An index call checks every element of the list in order, until it finds a match If the list is long, and if there is no guarantee that the value will be near the beginning, this can slow down the code This problem can only be completely avoided by using a different data structure
  • List of zeros in python - Stack Overflow
    How can I create a list which contains only zeros? I want to be able to create a zeros list for each int in range(10) For example, if the int in the range was 4 I will get: [0,0,0,0] and for 7:
  • python - Removing duplicates in lists - Stack Overflow
    How can I check if a list has any duplicates and return a new list without duplicates?
  • How do I make a flat list out of a list of lists? - Stack Overflow
    If your list of lists comes from a nested list comprehension, the problem can be solved more simply directly by fixing the comprehension; please see How can I get a flat result from a list comprehension instead of a nested list? The most popular solutions here generally only flatten one "level" of the nested list See Flatten an irregular (arbitrarily nested) list of lists for solutions that
  • Meaning of list[-1] in Python - Stack Overflow
    I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter c = Counte
  • What is the difference between list and list [:] in python?
    When reading, list is a reference to the original list, and list[:] shallow-copies the list When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously in the list Also, don't use list as a name since it shadows the built-in
  • Most efficient way to find if a value exists within a C# List
    In C# if I have a List of type bool What is the fastest way to determine if the list contains a true value? I don’t need to know how many or where the true value is I just need to know if one e
  • Get a list from Pandas DataFrame column headers - Stack Overflow
    I want to get a list of the column headers from a Pandas DataFrame The DataFrame will come from user input, so I won't know how many columns there will be or what they will be called For example




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