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If I have a list in python, is there a function to tell me if all the items in the list are strings?
For Example: ["one", "two", 3] would return False, and ["one", "two", "three"] would return True.
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To check if all the strings in a List are not empty, call all() builtin function, and pass the list of strings as argument. The following program statement is an example to call all() function with list of strings myList as argument. all() returns True if all the strings in the given list of strings are non-empty.
Using Python's "in" operator The simplest and fastest way to check whether a string contains a substring or not in Python is the "in" operator . This operator returns true if the string contains the characters, otherwise, it returns false .
The 'all' operator is used to check if every element is a digit or not. This is done using the 'isdigit' method. The result of this operation is assigned to a variable.
Just use all() and check for types with isinstance().
>>> l = ["one", "two", 3] >>> all(isinstance(item, str) for item in l) False >>> l = ["one", "two", '3'] >>> all(isinstance(item, str) for item in l) True If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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