Tutorial Playlist
200 Lessons1. Introduction to Python
2. Features of Python
3. How to install python in windows
4. How to Install Python on macOS
5. Install Python on Linux
6. Hello World Program in Python
7. Python Variables
8. Global Variable in Python
9. Python Keywords and Identifiers
10. Assert Keyword in Python
11. Comments in Python
12. Escape Sequence in Python
13. Print In Python
14. Python-if-else-statement
15. Python for Loop
16. Nested for loop in Python
17. While Loop in Python
18. Python’s do-while Loop
19. Break in Python
20. Break Pass and Continue Statement in Python
21. Python Try Except
22. Data Types in Python
23. Float in Python
24. String Methods Python
25. List in Python
26. List Methods in Python
27. Tuples in Python
28. Dictionary in Python
29. Set in Python
30. Operators in Python
31. Boolean Operators in Python
32. Arithmetic Operators in Python
33. Assignment Operator in Python
34. Bitwise operators in Python
35. Identity Operator in Python
36. Operator Precedence in Python
37. Functions in Python
38. Lambda and Anonymous Function in Python
39. Range Function in Python
40. len() Function in Python
41. How to Use Lambda Functions in Python?
42. Random Function in Python
43. Python __init__() Function
44. String Split function in Python
45. Round function in Python
46. Find Function in Python
47. How to Call a Function in Python?
48. Python Functions Scope
49. Method Overloading in Python
50. Method Overriding in Python
51. Static Method in Python
52. Python List Index Method
53. Python Modules
54. Math Module in Python
55. Module and Package in Python
56. OS module in Python
57. Python Packages
58. OOPs Concepts in Python
59. Class in Python
60. Abstract Class in Python
61. Object in Python
62. Constructor in Python
63. Inheritance in Python
64. Multiple Inheritance in Python
65. Encapsulation in Python
66. Data Abstraction in Python
67. Opening and closing files in Python
68. How to open JSON file in Python
69. Read CSV Files in Python
70. How to Read a File in Python
71. How to Open a File in Python?
72. Python Write to File
73. JSON Python
74. Python JSON – How to Convert a String to JSON
75. Python JSON Encoding and Decoding
76. Exception Handling in Python
77. Recursion in Python
78. Python Decorators
79. Python Threading
80. Multithreading in Python
81. Multiprocеssing in Python
82. Python Regular Expressions
83. Enumerate() in Python
84. Map in Python
85. Filter in Python
86. Eval in Python
87. Difference Between List, Tuple, Set, and Dictionary in Python
88. List to String in Python
89. Linked List in Python
90. Length of list in Python
91. Reverse a List in Python
92. Python List remove() Method
93. How to Add Elements in a List in Python
94. How to Reverse a List in Python?
95. Difference Between List and Tuple in Python
96. List Slicing in Python
97. Sort in Python
98. Merge Sort in Python
99. Selection Sort in Python
100. Sort Array in Python
101. Sort Dictionary by Value in Python
102. Datetime Python
103. Random Number in Python
104. 2D Array in Python
105. Abs in Python
106. Advantages of Python
107. Anagram Program in Python
108. Append in Python
109. Applications of Python
110. Armstrong Number in Python
111. Assert in Python
112. Binary Search in Python
113. Binary to Decimal in Python
114. Bool in Python
115. Calculator Program in Python
116. chr in Python
117. Control Flow Statements in Python
118. Convert String to Datetime Python
119. Count in python
120. Counter in Python
121. Data Visualization in Python
122. Datetime in Python
123. Extend in Python
124. F-string in Python
125. Fibonacci Series in Python
126. Format in Python
127. GCD of Two Numbers in Python
128. How to Become a Python Developer
129. How to Run Python Program
130. In Which Year Was the Python Language Developed?
131. Indentation in Python
132. Index in Python
133. Interface in Python
134. Is Python Case Sensitive?
135. Isalpha in Python
136. Isinstance() in Python
137. Iterator in Python
138. Join in Python
139. Leap Year Program in Python
140. Lexicographical Order in Python
141. Literals in Python
142. Matplotlib
143. Matrix Multiplication in Python
144. Memory Management in Python
145. Modulus in Python
146. Mutable and Immutable in Python
147. Namespace and Scope in Python
148. OpenCV Python
149. Operator Overloading in Python
150. ord in Python
151. Palindrome in Python
152. Pass in Python
153. Pattern Program in Python
154. Perfect Number in Python
155. Permutation and Combination in Python
156. Prime Number Program in Python
157. Python Arrays
158. Python Automation Projects Ideas
159. Python Frameworks
160. Python Graphical User Interface GUI
161. Python IDE
162. Python input and output
163. Python Installation on Windows
164. Python Object-Oriented Programming
165. Python PIP
166. Python Seaborn
167. Python Slicing
168. type() function in Python
169. Queue in Python
170. Replace in Python
171. Reverse a Number in Python
172. Reverse a string in Python
173. Reverse String in Python
174. Stack in Python
175. scikit-learn
176. Selenium with Python
177. Self in Python
178. Sleep in Python
179. Speech Recognition in Python
180. Split in Python
181. Square Root in Python
182. String Comparison in Python
183. String Formatting in Python
184. String Slicing in Python
185. Strip in Python
186. Subprocess in Python
187. Substring in Python
Now Reading
188. Sum of Digits of a Number in Python
189. Sum of n Natural Numbers in Python
190. Sum of Prime Numbers in Python
191. Switch Case in Python
192. Python Program to Transpose a Matrix
193. Type Casting in Python
194. What are Lists in Python?
195. Ways to Define a Block of Code
196. What is Pygame
197. Why Python is Interpreted Language?
198. XOR in Python
199. Yield in Python
200. Zip in Python
A part or a section of a string that can be separated from the main string is referred to as a substring. For instance,'stand' is a substring of 'understand'. The required substring is selected from the main string, which is declared in the program, using the slicing operation in Python. The syntax for substring in Python is as follows: string_var[start_index: end_index], where start and end index values represent the string's character place count and string_var is the variable used to declare a string value.
A string is a collection of Unicode characters. It consists of a series of characters, including alphanumeric and special characters. This article focuses on the Python substring concept and its operation.
Substrings are essentially a component of a string. To illustrate a section of string and perform some action on it, let's use an example.
Code:
statement = "Coding in Python is fun."
substring = statement[0:7]
print("Original Text :",statement)
print("Substring :",substring)
Output:
Original Text: Coding in Python is fun.
Substring: Coding
Python provides different ways and styles to induce a substring, to check if a substring is present, to get the indicator of a substring, and more.
You can extract substring from string Python by slicing with indicators that get your substring as follows:
string [start.stop.step]
start- The starting indicator of the substring.
stop- The final indicator of a substring.
step- A number which is specifying the step of the slicing. The dereliction value is 1.
Both positive and negative numbers can be used as indices. The positive indices move from the beginning of the string to its end, while the negative indices move from the string's end to its beginning.
You will discover several Python operations related to substrings in this article.
In Python, one of the most common operations is checking a substring. Python uses a variety of methods, such as find(), index(), count(), etc., to determine whether a string contains a substring. The "in" operator, which is used as a comparison operator, is the fastest and most effective technique. Here, we'll discuss various strategies:
# Take input from users
MyString1 = "A buddy is obviously a geek indeed"
if "need" in MyString1:
print("Yes! it is present in this string")
else:
print("No! it is not present")
Output:
Yes! It is present in this string.
# input strings str1 and substr
string = "MMA is good" # or string=input() -> taking input from the user
substring = "good" # or substring=input()
# splitting words in a given string
s = string.split()
# checking condition
# if substring is present in the given string then it gives output as yes
if substring in s:
print("yes")
else:
print("no")
Output:
Yes
def check(string, sub_str):
if (string.find(sub_str) == -1):
print("NO")
else:
print("YES")
# driver code
string = "friends are good"
sub_str = "friends"
check(string, sub_str)
Output:
Yes
def check(s2, s1):
if (s2.count(s1) > 0):
print("YES")
else:
print("NO")
s2 = "A friend is a friend soulmate"
s1 = "friends"
check(s2, s1)
Output:
No
Using a lambda function, check a Python substring between two characters in a string. A lambda function can be used to quickly check if a substring is present in any of the words in a string.
s="Like is Like"
s2="Like"
x=list(filter(lambda x: (s2 in s),s.split()))
print(["yes" if x else "no"])
Output:
['Yes']
import re
MyString1 = "A bro is helping hand and bro is a pure soul"
if re.search("need", MyString1):
print("Yes! it is present in the string")
else:
print("No! it is not present")
Output:
Yes! it is present in the string
Here’s how you can get the substring from a given string using list slicing:
# Example 1: Get the first 3 characters of a string
myString = "Hello World"
substring = myString[0:3]
print(substring) # Output: "Hel"
# Example 2: Get each other character in a string
myString = "abcdefghijklmnopqrstuvwxyz"
substring = myString[0:len(myString):2]
print(substring) # Output: "acegikmoqsuwy"
# Example 3: Get a substring starting from the 4th position character and skipping every third character
myString = "abcdefghijklmnopqrstuvwxyz"
substring = myString[3:len(myString):3]
print(substring) # Output: "dgljmpsvy"
Output:
Hel acegikmoqsuwy dgjmpsvy
List slicing is a common practice in Python and is the most popular method used by programmers to solve practical problems. Consider a Python list. You must slice a list in order to access a specific subset of its elements. Use of the straightforward slicing operator, colon(:), is one way to accomplish this. With the help of this operator, one can specify the step as well as the starting and ending points for the slicing. From the original list, list slicing produces a new list.
List slicing in Python uses the following format:
Lst[ Initial : End : IndexJump ]
The indexing operators [and] can be used to quickly cut a string, as shown below:
string = 'dheaxkalmlprloeob'
string[2:15:2
'example'
In this illustration, [start:end:step] was used to obtain a result. We designate the starting Python substring index with start, and the endpoint with end.
For instance, using string[2:15] alone would return 'eaxkalmlprloe', but setting step two instructs Python to skip through the characters two at a time. A breakdown of this procedure can be seen in the picture below:
A string can be divided into what is referred to as a substring. You can use the code snippet to apply to example_string to return a substring by looking at the image below, which shows the string example_string with indices.
It's time to put an end to this discussion of Python substring. Today, we learned a lot about Python substrings, from syntax to naive methods for obtaining the substring. Finally, we examined numerous instances of both using a substring and reversing a string using a substring. It's time for you to put what you've learned into practice.
1. What does Python's substring function do?
In Python, a substring is a group of characters with another string attached. 'Slicing of String' is another name for it. Our strings can be processed using the 'slicing' feature of arrays in Python. Slicing is a versatile functionality that can be applied to any array type object.
2. What Python command is most effective for finding substrings?
To determine whether the substring is actually present in the string, use the in keyword. The Boolean value that the in keyword returns is either True or False. When the substring is found in the string, the in operator returns True. Before using the find() method, using the in keyword is a helpful first step.
3. How does Python determine whether a substring exists?
Using an if-else statement, you can determine whether a Python substring is present in a string in Python. You can conditionally execute various blocks of code using the if-else statement depending on whether the condition is true or false.
4. How frequently does a substring occur in a string?
The count() method can count how many times a substring appears in a longer string. The count() function in Python iterates through a string. The amount of times a substring appears in the string is returned as a value.
5. How can a substring be extracted from a string?
Use the Substring(Int32, Int32) method to extract substring from string Python regex that starts at a specific character position and ends before the string's end. The value of the currently active instance is not changed by this method. Instead, it gives back a brand-new string that starts where startIndex was in the original string.
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Director of Engineering
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upGrad does not grant credit; credits are granted, accepted or transferred at the sole discretion of the relevant educational institution offering the diploma or degree. We advise you to enquire further regarding the suitability of this program for your academic, professional requirements and job prospects before enr...