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For example, if passed the following:
a = [] How do I check to see if a is empty?
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You can just check if there is the element '' in the list: if '' in lst: # ... if '' in lst[:1]: # for your example # ...
Checking empty list using len() Function. The len() function is used to find the number of elements in the list. So, to check if the list is empty or not using len(), we can pass the empty list to the len() function, and if we get 0, that means the list is empty.
list::empty() is an inbuilt function in C++ STL which is declared in header file. list::empty() checks whether the given list container is empty(size is 0) or not, and returns true value if the list is empty and false if the list is not empty.
To check if an array is empty in Python, use the numpy. ndarray. size property and compare it with zero(0). If the number is 0, then an array is empty.
if not a: print("List is empty") Using the implicit booleanness of the empty list is quite pythonic.
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