Hướng dẫn how do you change part of a string in python? - làm thế nào để bạn thay đổi một phần của một chuỗi trong python?

Cú pháp: String.replace (SearchValue, NewValue) ....

Ví dụ 1:.

Cú pháp: String.replace (SearchValue, NewValue) ....

Ví dụ 1:.

Đầu ra: Chuỗi ban đầu là GeekSforGeek Chuỗi được thay thế là GeekSandGeek ..replace() in Python returns a copy of the string where all occurrences of a substring are replaced with another substring. 

Cú pháp thay thế ()

Cú pháp: String.replace (cũ, mới, đếm) string.replace(old, new, count)

Parameters: 

• Cũ - con cũ bạn muốn thay thế. old substring you want to replace.
• MỚI - Chất nền mới sẽ thay thế cho bộ nền cũ. new substring which would replace the old substring.
• Đếm - (Tùy chọn) Số lần bạn muốn thay thế bộ con cũ bằng bộ nền mới. & NBSP; (Optional ) the number of times you want to replace the old substring with the new substring. 

Giá trị trả về: Nó trả về một bản sao của chuỗi trong đó tất cả các lần xuất hiện của một chuỗi con được thay thế bằng một chuỗi con khác. & NBSP;It returns a copy of the string where all occurrences of a substring are replaced with another substring. 

Thay thế tất cả các phiên bản của một ký tự bằng cách sử dụng thay thế ()

Trong ví dụ này, chúng tôi chỉ thay thế một ký tự duy nhất từ ​​một chuỗi đã cho. Phương thức thay thế python () là nhạy cảm trường hợp, và do đó nó thực hiện thay thế chuỗi con nhạy cảm trường hợp, tức là r trong không thay đổi.

Python3

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

Đầu ra: & nbsp; 

grrks FOR grrks
geeks FOR geeks

Thay thế tất cả các phiên bản của chuỗi

Ở đây, chúng tôi đã thay thế tất cả các chuyên viên máy tính bằng geekSforGeek bằng hàm thay thế ().

Python3

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

Đầu ra: & nbsp; 

geeks for geeks 
geeks for geeks
GeeksforGeeks for GeeksforGeeks 
GeeksforGeeks for GeeksforGeeks

Thay thế tất cả các phiên bản của chuỗi

Ở đây, chúng tôi đã thay thế tất cả các chuyên viên máy tính bằng geekSforGeek bằng hàm thay thế ().count=3.

Python3

str.replace(old, new [, count]) 

str.replace(old, new [, count]) 

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))




song = 'Let it be, let it be, let it be, let it be'
# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'
replaced_song = song.replace('o', 'e')

# The original string is unchanged
print('Original string:', song)

print('Replaced string:', replaced_song)

song = 'let it be, let it be, let it be'

# maximum of 0 substring is replaced
# returns copy of the original string
print(song.replace('let', 'so', 0))

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

song = 'cold, cold heart'
replaced_song = song.replace('o', 'e')

# The original string is unchanged
print('Original string:', song)

print('Replaced string:', replaced_song)

song = 'let it be, let it be, let it be'

# maximum of 0 substring is replaced
# returns copy of the original string
print(song.replace('let', 'so', 0))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

song = 'cold, cold heart'
replaced_song = song.replace('o', 'e')

# The original string is unchanged
print('Original string:', song)

print('Replaced string:', replaced_song)

song = 'let it be, let it be, let it be'

# maximum of 0 substring is replaced
# returns copy of the original string
print(song.replace('let', 'so', 0))

song = 'cold, cold heart'

# replacing 'cold' with 'hurt'
print(song.replace('cold', 'hurt'))

song = 'Let it be, let it be, let it be, let it be'

# replacing only two occurences of 'let'
print(song.replace('let', "don't let", 2))

Original string: cold, cold heart
Replaced string: celd, celd heart
let it be, let it be, let it be

hurt, hurt heart
Let it be, don't let it be, don't let it be, let it be

Output:    

gaaks for gaaks gaaks gaaks gaaks
geas for geas geas geeks geeks