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- Meaning of list[-1] in Python - Stack Overflow
All your return c most_common()[-1] statement does is call c most_common and return the last value in the resulting list, which would give you the least common item in that list Essentially, this line is equivalent to:
- python - How to convert list to string - Stack Overflow
Agree with @Bogdan This answer creates a string in which the list elements are joined together with no whitespace or comma in between You can use ', ' join(list1) to join the elements of the list with comma and whitespace or ' ' join(to) to join with only white space –
- What is the syntax to insert one list into another list in python?
List slicing is quite flexible as it allows to replace a range of entries in a list with a range of
- python - Removing duplicates in lists - Stack Overflow
def make_unique(original_list): unique_list = [] [unique_list append(obj) for obj in original_list if obj not in unique_list] return unique_list Some may consider list comprehension with a side effect to not be a good solution
- How do I concatenate two lists in Python? - Stack Overflow
joined_list = [item for list_ in [list_one, list_two] for item in list_] It has all the advantages of the newest approach of using Additional Unpacking Generalizations - i e you can concatenate an arbitrary number of different iterables (for example, lists, tuples, ranges, and generators) that way - and it's not limited to Python 3 5 or later
- How to list all installed packages and their versions in Python?
For Windows 10, I think this is what you are looking for a list of available installed Pythons This is different from a list of packages as you can see below Also, on Ubuntu 20 04, I think the command is Python3 -0 list Yes, this works similar to node version manager c:\Users\user\AppData\Local\Programs\Python>py -0 list Python 0 not found!
- How can I filter items from a list in Python? - Stack Overflow
my_list = ['foo','bar','baz','>=','5 2'] # With only_words = [token for token in my_list if token isalpha()] # Without only_words = filter(str isalpha, my_list) Personally I don't think you have to use a list comprehension for everything in Python, but I always get frowny-faced when I suggest map or filter answers
- Get a list from Pandas DataFrame column headers
Create a list of keys columns - object method to_list() and the Pythonic way: my_dataframe keys() to_list() list(my_dataframe keys()) Basic iteration on a DataFrame returns column labels: [column for column in my_dataframe] Do not convert a DataFrame into a list, just to get the column labels
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