The best way to convert Record to String | String to Record – Python Program

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convert list to string python

Everybody is aware of how widespread Python is in at present’s time and the way a lot Python professionals are in demand. It’s one of many easiest languages to be taught and in addition comes with nice options. On this weblog, we are going to have a look at easy methods to convert a listing to string and string to a listing in Python. So, let’s get began, we could?

  1. What are Lists
  2. What are Strings
  3. Convert Record to Strings
  4. Convert a Record of integers to a single integer
  5. Convert String to Lists
  6. Convert String to listing of characters
  7. Convert Record of characters right into a string
  8. Steadily Requested Questions

What are Lists?

In case you are aware of the C programming language, then you definately might need heard about arrays. Lists are just about like arrays besides that they will comprise any knowledge kind, not like arrays. An inventory is a set of objects which are ordered. Additionally, every ingredient within the listing is listed in line with a particular sequence, and a listing’s indexing is completed with 0 being the primary index.

The listing is a ‘Assortment Datatype’ that may comprise integers, strings, or different lists too. Lists are mutable, therefore, they are often modified even after their creation. Additionally, observe that lists can comprise duplicate entries, not like units. Python lists will be created within the following means:

EmptyList=[] #EmptyList
listOfnumbers=[1,3,56,78] #Record of numbers
listOfObjects=[1,"anything",["lists","in","lists"],2.5] # Record containing completely different knowledge sorts
print(EmptyList)
print(listOfnumbers)
print(listOfObjects)

Strive Your self. Let’s Play with Some Lists. Click on Right here

Additionally, be taught what a listing is in python in additional element to implement your studying ahead.

What are ‘Strings’?

So, what precisely are strings? Strings are one of many knowledge sorts in Python and will be outlined as a sequence of characters. There’s a built-in class ‘str’ for dealing with a Python string. Creating strings is so simple as assigning a worth to a variable. For instance −

first_name=""'Ted '''
middle_name="Evelen "#generally used methodology
last_name="Mosby"#generally used methodology
print(first_name,middle_name,last_name)

Strive it your self. Let’s make some Names

As will be seen within the instance above, there are 3 ways through which we will create a string. Though double quotes and single quotes are extra usually used than triple quotes, what if the string accommodates a single quote or double quotes? Allow us to discover out within the instance beneath.

string_1="Whats up "Python" "
string_1='Whats up "Python"'
print(string_1)
string_2='Let's go to the park'
string_2="Let's go to the park"
print(string_2)
string_3='''Let's go the "PARK"'''
print(string_3)

Within the above instance, we discovered easy methods to keep away from such errors, now transferring on to the query “easy methods to convert a listing to a string?”

Convert Record to String

A number of strategies can be utilized to transform a listing to a string.

Technique 1

By utilizing the in-built methodology of python .be a part of()

Identify=["Ted","Evelen","Mosby"]
print(" ".be a part of(Identify))#used an area to separate listing parts right here.
College students=["Barney","Robin","Lily"]
print("n".be a part of(College students))

Strive some Conversions Your self

NOTE: If the listing accommodates any non-string ingredient, the above methodology doesn’t work until we use map() operate to transform all parts to a string first. Let’s see an instance:

test_list=["I","have",2,"numbers","and",8,"words","in","this","list"]
print(" ".be a part of(map(str,test_list)))

Click on right here and follow 

Technique 2

Utilizing the str() methodology 

Numbers=[1,56,87,22.3,76]
print(str(Numbers))
#Now manipulate the str() to get string of simply Numbers
print(str(Numbers)[1:-1])
#or we will use strip operate to get jsy Numbers
print(str(Numbers).strip('[]'))

Check out your self. Click on right here 

Technique 3

Utilizing the Record comprehension methodology

test_list=["I","have",2,"numbers","and",8,"words","in","this","list"]
listToStr=" ".be a part of([str(element) for element in test_list ]) 
print(listToStr) 

Click on Right here and Run it your self

Technique 4

Utilizing Be part of Operate

Python comes with an inbuilt operate JOIN(), to transform a listing right into a string. The be a part of () operate combines the weather of a listing utilizing a string separator. It is without doubt one of the easiest methods to transform a listing right into a string utilizing Python. Nonetheless, it needs to be saved in thoughts that it solely converts a listing right into a string when the listing accommodates string parts in it. 

string_separator.be a part of(name_of_list)

Now to know the operate higher, let’s see an instance beneath:

my_list = [‘how’, ‘to’, ‘convert’, ‘into’, ‘string’]

‘ ‘.be a part of(listing)

Output:

‘easy methods to convert into string’

Within the instance above, the listing accommodates string parts in it and the subsequent line is used to transform it right into a single string utilizing the be a part of operate. The clean area utilized in single quotes earlier than initiating the be a part of operate is used to present an area between the objects of a listing. 

Now, suppose if the listing doesn’t comprise a string and you continue to must convert it into the string, then how will you do it?

Let’s see it in one other instance:

my_list = [1,3,5,7,9]

‘ ‘.be a part of(str (e) for e in listing)

Output:

‘1 3 5 7 9’

Right here the datatype was completely different as the weather weren’t strings, and due to this fact, we wanted to transform them into the listing first utilizing the str() operate with an iterable over all parts of the listing utilizing for loop. This manner, it transformed it into particular person strings first after which transformed right into a single string. 

Technique 5

Traversal of a Record Operate

That is one other methodology of changing a listing right into a string by traversing via every ingredient within the string utilizing for loop and mixing it with the earlier ingredient till the listing turns into empty. And eventually, it returns a single string as an output. See the instance beneath to know the idea extra clearly.

Instance:

my_list = [‘learn’, ‘with’, ‘great’, ‘learning’, ‘academy’]

single_string = ‘ ‘

for i in my_list:
	single_string += ‘ ‘ + i

print(single_string)

Output:

be taught with nice studying academy

Within the above instance, the for loop iterated via every ingredient within the listing and concatenated in a single string which was our last outcome. 

Technique 6

Utilizing map() Operate

There will be two doable eventualities the place you need to use the map() operate to transform a listing to a string. These two instances embody when the listing has solely numbers and the opposite if the listing is heterogeneous. See an instance beneath:

my_list = [‘Hi’, ‘Ashu’, ‘how’, ‘are’, ‘you’, ‘?’]

str_ing = ‘ ‘.be a part of(map(str, my_list))

print(str_ing)

Output:

Hello Ashu how are you ?

Right here the map operate wants two arguments, such that the primary is the datatype the place you could give str to transform right into a string, and the opposite is the title of the listing. Now, the map operate first calls every ingredient in an iterable sequence utilizing the str() operate that converts every ingredient right into a string. Lastly, the be a part of operate combines every ingredient right into a single string. 

Technique 7

Iterating By the Record

This methodology could be very easy, the place we simply must traverse via every ingredient within the listing utilizing for loop and including every ingredient to our string variable. See the python code beneath for a greater understanding:

my_list = [‘Hi’, ‘Ashu’, ‘How’, ‘are’, ‘you’, ‘?’]

my_string = “”

for x in my_list:

my_string += x + ‘’

print(my_string)

Output:

Hello Ashu How are you ?

Convert a listing of integers right into a single integer

Given a listing of integers like [1,2,3], Can we convert it right into a single integer, 123? Certain we will.

Let’s discover out some strategies to take action

Technique 1

Utilizing the be a part of() methodology of Python

We will use the be a part of () methodology and the inbuilt int() in Python. Allow us to see some examples to know higher.

list_1 = [1, 2, 3]
numbers_str = [str(i) for i in list_1] #Utilizing listing comprehension 
print(numbers_str) 
#Now that the weather have been transformed to strings we will use the be a part of methodology
quantity= int("".be a part of(numbers_str)) #convert last string to integer
print(quantity) 

Check out some examples your self. Click on right here

Technique 2

The second methodology is rather more naive and is finest suited once we wish to simply show the quantity as a substitute of storing it in a variable as proven in methodology 1. Allow us to see how to do that:

list_1 = [12, 15, 17] 
# iterating every ingredient 
def toNumber(anyList):
    for i in anyList: 
        print(i, finish="")
    print("")#This print assertion by default prints a brand new line
toNumber(list_1)
toNumber([1,8,4,99])
#Be aware that the quantity isn't saved anyplace.

Click on Right here and Apply with the above code

Convert String to Record

As we now have seen other ways to transform a listing to a string. Now, we are going to perceive to transform a string to a listing in python. There are numerous methods to transform a string in Python. 

Conversion of 1 knowledge kind to different will be executed utilizing python. However changing string to listing isn’t so simple as an information kind conversion. Some widespread listing conversion strategies are break up() and listing(). Allow us to see each of those strategies to transform a string to a listing.

Utilizing Break up():

The break up() methodology could be very helpful that dividing the string based mostly on a specified delimiter. Such that the string is split and saved in a listing. The built-in methodology of python is used to return a listing of phrases within the string with the assistance of a specified delimiter. 

Syntax:

my_string.break up(delimiter, maxsplit)

Listed here are the parameters: delimiter and max break up are non-obligatory, the place in case you don’t specify delimiter, then it can mechanically take white area as a delimiter, and max break up is used to separate most instances. You too can specify the variety of splits that you simply wish to perform within the string. 

Instance: 

my_string = “Hello Nice Learner how are you doing”
my_list = my_string.break up()
print(my_string)

Output:

[‘Hi’, ‘Great’, ‘Learner’, ‘how’, ‘are’, ‘you’, ‘doing’]

Rationalization:

Right here, we didn’t specify the delimiter and max break up. Due to this fact, it took the default delimiter as white area and did the break up of the entire string. 

Utilizing listing():

This methodology can be used to transform a string to a listing. This is without doubt one of the commonest methods to transform a string. Nonetheless, we suggest utilizing this methodology solely while you wish to break up the string into a listing of characters. The listing methodology divides the string into characters. See the instance beneath to know it utterly. 

Instance:

my_string = “Convert string to listing of characters”
my_list = listing(my_string.strip(“ “))
print(my_list)

Output:

[‘C’, ‘o’, ‘n’, ‘v’, ‘e’, ‘r’, ‘t’, ‘ ‘, ‘s’, ‘t’, ‘r’, ‘i’, ‘n’, ‘g’, ‘ ‘, ‘t’, ‘o’, ‘ ‘, ‘l’, ‘i’, ‘s’, ‘t’, ‘ ‘, ‘o’, ‘f’, ‘ ‘, ‘c’, ‘h’, ‘a’, ‘r’, ‘a’, ‘c’, ‘t’, ‘e’, ‘r’, ‘s’]

Rationalization: Right here, the string is split into characters and saved in a listing variable. It may be seen that white area can be taken as a single character within the string. 

We will use the in-built operate break up() to transform a string to a listing. Allow us to see some examples:

string_1="Allow us to convert string to listing"
print(string_1.break up(" "))# Right here we specified " " as delimiter
#Primarily based on the required delimiter the listing string will likely be sepatrated
string_2="Let*us*convert*string to*listing"
print(string_2.break up())#By default delimiter is area " "
print(string_2.break up("*"))#Right here we specified * because the  delimiter

Check out the code your self

Within the final line of output, it may be seen that the ingredient ‘string to’ isn’t separated. The reason is that the delimiter specified is asterisk ‘*’ not area “ ”.

Convert String to Record of characters

As mentioned above, a String is a sequence of characters. We will convert it to the listing of characters utilizing listing() built-in operate. When changing a string to a listing of characters, whitespaces are additionally handled as characters. Additionally, if there are main and trailing whitespaces, they’re part of the listing parts too.

Allow us to see some examples:

string_1=' Nice! *^& '
print(listing(string_1))
print(listing(string_1.strip()))

Strive the code above. Click on right here to follow

The strip operate is used to go away out all main and trailing whitespace, however the areas within the center aren’t neglected.

Convert a listing of characters right into a string

Changing a listing of characters right into a string is sort of much like changing a listing of integers right into a quantity which is already proven above. So allow us to see how it’s executed

To transform a listing of characters like [g,r,e,a,t] right into a single string ‘nice’,we use the be a part of() methodology as proven beneath

chars=['g','r','e','a','t']
string1=''.be a part of(chars)
print(string1)

Output:

Click on right here to run it your self

This brings us to the tip of this text, the place we now have discovered how we will convert lists to strings and rather more. In the event you want to be taught extra about Python and the ideas of Machine Studying, upskill with Nice Studying’s PG Program in Machine Studying.

Steadily Requested Questions

How do I flip a listing right into a string?

Use Python Record Comprehension with the be a part of() methodology to transform a listing to a string. The be a part of() methodology concatenates the weather of the listing right into a single string and outputs it, whereas the listing comprehension iterates via the weather one after the other.

How do I convert a listing of numbers to a string?

You need to use one-liner strings = [str(x) for x in ints] to transform a listing of integers into a listing of strings.

Can we convert string to listing in Python?

A string in Python is a set of characters. By utilising the built-in operate listing(), we could convert it to a listing of characters. Whitespaces are additionally thought-about characters when changing a string to a listing of characters.

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