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Finding the mode of a list
...(a), key=a.count)) returns 11. Will it always return the minimum mode? And if so, why?
– battey
Jan 13 '19 at 22:54
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How do I check if a directory exists? “is_dir”, “file_exists” or both?
I want to create a directory if it does'nt exist already.
12 Answers
12
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How to remove the left part of a string?
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If the string is fixed you can simply use:
if line.startswith("Path="):
return line[5:]
which gives you everything from position 5 on in the string (a string is also a sequence so these sequence operators work here, to...
How to quickly check if folder is empty (.NET)?
I have to check, if directory on disk is empty. It means, that it does not contain any folders/files. I know, that there is a simple method. We get array of FileSystemInfo's and check if count of elements equals to zero. Something like that:
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Python : List of dict, if exists increment a dict value, if not append a new dict
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That is a very strange way to organize things. If you stored in a dictionary, this is easy:
# This example should work in any version of Python.
# urls_d will contain URL keys, with counts as values, like: {'http://www.google.fr/' : 1 }
urls_d = {}
for url in list_of_url...
Creating a new column based on if-elif-else condition
...tion that operates on the rows of your dataframe like so:
def f(row):
if row['A'] == row['B']:
val = 0
elif row['A'] > row['B']:
val = 1
else:
val = -1
return val
Then apply it to your dataframe passing in the axis=1 option:
In [1]: df['C'] = df.apply(f...
How should I call 3 functions in order to execute them one after the other?
If I need call this functions one after other,
11 Answers
11
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List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
While using new_list = my_list , any modifications to new_list changes my_list everytime. Why is this, and how can I clone or copy the list to prevent it?
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Check if one list contains element from the other
I have two lists with different objects in them.
12 Answers
12
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Detect IF hovering over element with jQuery
... looking for an action to call when hovering, but instead a way to tell if an element is being hovered over currently. For instance:
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