Python String Replace () - Tutorial Kart
Python String Replace ? str.replace()
Python String Replace
Using str.replace() function, we can replace sub-string in a string with new string. We can replace all or N number of occurrences. We can control this behavior by passing the number N as third argument.
str.replace() Function
The syntax of str.replace() function is str.replace(old, new[, count])
returns str the original string, from which old sub-string is replaced with new sub-string. If count is provided, replace the old sub-string for its first count number of occurrences.
Python String Replace ? All Occurrences
In this example, we will replace all the occurrences of old sub-string with new sub-string. example.py ? Python Program #string replace example s1 = 'cat says hey. concat catalog.' old = 'cat' new = 'dog' s2 = s1.replace(old, new) print(s2)
Output dog says hey. condog dogalog.
Python String Replace ? Only N Occurrences
In this example, we will replace only N occurrences of old sub-string with new sub-string. example.py ? Python Program
#string replace example s1 = 'cat says hey. concat catalog.' old = 'cat' new = 'dog' s2 = s1.replace(old, new, 2) print(s2)
Output
dog says hey. condog catalog.
In the input string s1 , only the first two occurrences of the old sub-string is replaced.
Conclusion
In this Python Tutorial, we learned how to use replace a substring in a given string using str.replace() function.
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