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Articles by Pradeep Elance
Page 14 of 31
Converting list string to dictionary in Python
Here we have a scenario where if string is presented which has elements in it making it a list. But those elements can also represent a key-value pair making it dictionary. In this article we will see how to take such a list string and make it a dictionary.With split and slicingIn this approach we use the split function to separate the elements as key value pair and also use slicing to convert the key value pairs into a dictionary format.Example Live DemostringA = '[Mon:3, Tue:5, Fri:11]' # Given string print("Given string : ", stringA) # Type check print(type(stringA)) # using ...
Read MoreConverting all strings in list to integers in Python
Sometimes we can have a list containing strings but the strings themselves are numbers and closing quotes. In such a list we want to convert the string elements into actual integers.With int()The int function takes in parameters and converts it to integers if it is already a number. So we design a for loop to go through each element of the list and apply the in function. We store the final result into a new list.Example Live DemolistA = ['5', '2', '-43', '23'] # Given list print("Given list with strings : ", listA) # using int res = [int(i) for i ...
Read MoreConvert two lists into a dictionary in Python
While a Python list contains a series of values a dictionary on the other hand contains a pair of values which are called key-value pairs. In this article we will take two lists and mark them together to create a Python dictionary.With for and removeWe create two nested for loops. In the inner loop will assign one of the list as key for the dictionary while keep removing the values from the list which is outer for loop.Example Live DemolistK = ["Mon", "Tue", "Wed"] listV = [3, 6, 5] # Given lists print("List of K : ", listK) print("list of V ...
Read MoreConvert string to DateTime and vice-versa in Python
Python has extensive date and time manipulation capabilities.In this article we'll see in how is string with proper format can we converted to a datetime and the vice versa.With strptimeThis strptime function from datetime module can do the conversion from string to datetime by taking appropriate format specifiers.Example Live Demoimport datetime dt_str = 'September 19 2019 21:02:23 PM' #Given date time print("Given date time: ", dt_str) #Type check print("Data Type: ", type(dt_str)) #Format dtformat = '%B %d %Y %H:%M:%S %p' datetime_val = datetime.datetime.strptime(dt_str, dtformat) print("After converting to date time: ", datetime_val) #Type check print("Data type: ", type(datetime_val)) # Reverting to string ...
Read MoreConvert set into a list in Python
As part of data analysis using Python we may be required to to convert the data container from set to list. In this article we'll see e how to solve this requirement.With listThis is a straightforward approach in which we directly apply the list function on the given set. The elements get converted into elements of a list.Example Live DemosetA = {'Mon', 'day', '7pm'} # Given Set print("Given set : ", setA) res = (list(setA) ) # Result print("Final list: ", res)OutputRunning the above code gives us the following result −Given set : ['7pm', 'Mon', 'day'] Final list: ['7pm', 'Mon', 'day']With ...
Read MoreConvert number to list of integers in Python
As part of data manipulation in Python we may sometimes need to convert a given number into a list which contains the digits from that number. In this article we'll see the approaches to achieve this.With list comprehensionIn the below approach we apply the str function to the given number and then convert into integer through identity function. Finally we wrap the result into a list.Example Live DemonumA = 1342 # Given number print("Given number : ", numA) res = [int(x) for x in str(numA)] # Result print("List of number: ", res)OutputRunning the above code gives us the following result −Given ...
Read MoreConvert list of tuples into digits in Python
Python has a wide variety of data manipulation capabilities. We have a scenario in which we are given a list which has elements which are pair of numbers as tuples. In this article we will see how to extract the unique digits from the elements of a list which are tuples.With re and setWe can use regular expression module and its function called sub. It is used to replace a string that matches a regular expression instead of perfect match. So we design a regular expression to convert the tuples into normal strings and then apply the set function to ...
Read MoreConvert list of strings and characters to list of characters in Python
While dalign with lists, we may come across a situation where we have to process a string and get its individual characters for further processing. In this article we will see various ways to do that.With list comprehensionWe design a for loop to go through each element of the list and another loop inside this to pick each character from the element which is a string.Example Live DemolistA = ['Mon', 'd', 'ay'] # Given lists print("Given list : ", listA) # Get characters res = [i for ele in listA for i in ele] # Result print("List of characters: ", res)OutputRunning ...
Read MoreConvert dictionary object into string in Python
For data manipulation in python we may come across situation to convert a dictionary object into a string object. This can be achieved in the following ways.with str()In this straight forward method we simple apply the str() by passing the dictionary object as a parameter. We can check the type of the objects using the type() before and after conversion.Example Live DemoDictA = {"Mon": "2 pm", "Wed": "9 am", "Fri": "11 am"} print("Given dictionary : ", DictA) print("Type : ", type(DictA)) # using str res = str(DictA) # Print result print("Result as string:", res) print("Type of Result: ", type(res))OutputRunning the above ...
Read MoreConvert case of elements in a list of strings in Python
As part of data manipulation, we will come across the need to have a single case for all the letters in a string. In this article we will see how to take a list which has string elements with mixed cases. We then apply some python functions to convert them all to a single case.With lower()The lower function is a string function that can convert the entire string to lower case. So we use lambda and map to apply the lower function to each of the elements in the list.Example Live DemolistA = ['MoN', 'TuE', 'FRI'] # Given list print("Given list ...
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