Tag: or
Python : Check if all elements in a List are same or matches a condition
In this article we will dicuss different ways to check if all element in a given List are same or matches a condition. Suppose we have a list of string i.e. Advertisements # List of string listOfStrings = [‘Hello’] * 10 Now let’s use python all() function to check if all elements in the given …
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Python: How to sort a list of tuples by 2nd Item using Lambda Function or Comparator
In this article we will discuss how to sort a list of tuple using 2nd or i th item of tuple. Suppose we have a list of tuple i.e. words and thier frequency count, Advertisements # List of tuples i.e. word and its frequency count wordFreq = [ (‘the’ , 34) , (‘at’ , 23), …
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Python : Join / Merge lists ( two or more)
In this article we will discuss different ways to Merge / Join two or more lists in python. Table of Contents Join / Merge two lists in python using + operator. Join / Merge two lists in python using list.extend(). Join / Merge two lists in python using unpacking. Join / Merge two lists in …
Python : How to remove element from a list by value or Index | remove() vs pop() vs del
In this article we will discuss different ways to remove an elements from list. Remove an element from List by value using list.remove() Python’s list provides a member function to remove an element from list i.e. Advertisements list.remove(value) It removes the first occurrence of given element from the list. For example, Frequently Asked: Convert a …
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Python : How to Sort a Dictionary by key or Value ?
In this article we will discuss how to sort the contents of dictionary by key or value. Suppose we have a dictionary of string and ints i.e. Advertisements # Dictionary of strings and ints wordsFreqDict = { “hello”: 56, “at” : 23 , “test” : 43, “this” : 43 } Dictionary is like a hash …
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Python : How to replace single or multiple characters in a string ?
In this article we will discuss how to replace single or multiple characters in a string in Python. Python provides a str.replace() function i.e. Advertisements str.replace(old, new , count) It returns a new string object that is a copy of existing string with replaced content. Also, If count is not provides then it will return …
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Python Pandas : Replace or change Column & Row index names in DataFrame
In this article we will discuss how to change column names or Row Index names in DataFrame object. First of all, create a dataframe object of students records i.e. Advertisements students = [ (‘jack’, 34, ‘Sydeny’) , (‘Riti’, 30, ‘Delhi’ ) , (‘Aadi’, 16, ‘New York’) ] # Create a DataFrame object dfObj = pd.DataFrame(students, …
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Select Rows & Columns by Name or Index in using loc & iloc
In this article we will discuss different ways to select rows and columns in DataFrame. DataFrame provides indexing labels loc & iloc for accessing the column and rows. Also, operator [] can be used to select columns. Let’s discuss them one by one, Advertisements First create a DataFrame object i.e. students = [ (‘jack’, 34, …
Select Rows & Columns by Name or Index in using loc & ilocRead More
Python : How to unpack list, tuple or dictionary to Function arguments using * & **
In this article we will discuss how to unpack a list, tuple and dictionary to function arguments. Suppose we have a function with 3 parameters i.e. Advertisements def updateStudentDetail(name, phone, address): print(“**********************”) print(“Student Name : “, name) print(“Student phone : “, phone) print(“Student address : “, address) We can call this function and pass three …
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Python Pandas : Drop columns in DataFrame by label Names or by Index Positions
In this article we will discuss how to drop columns from a DataFrame object. DataFrame provides a member function drop() i.e. Advertisements DataFrame.drop(labels=None, axis=0, index=None, columns=None, level=None, inplace=False, errors=’raise’) It accepts a single Label Name or list of Labels and deletes the corresponding columns or rows (based on axis) with that label. It considers the …
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