很不幸，您無法原地修改字串，因為字串是不可變的。只需從您想要收集的幾個部分創建一個新的字串。但是，如果您仍然需要一個能夠原地修改Unicode資料的對象，您應該使用
Let’s see what we discussed above −
In this example, we will return a string with the entire contents of the buffer. We have a text stream StringIO −
#
import io
myStr = "Hello, How are you?"
print("String = ",myStr)
# StringIO is a text stream using an in-memory text buffer
strIO = io.StringIO(myStr)
# The getvalue() returns a string containing the entire contents of the buffer
print(strIO.getvalue())
String = Hello, How are you? Hello, How are you?
現在，讓我們改變流的位置，寫入新內容並顯示
We will see another example and change the stream position using the seek() method. A new string will be written at the same position using the write() method −
#import io
myStr = "Hello, How are you?"
# StringIO is a text stream using an in-memory text buffer
strIO = io.StringIO(myStr)
# The getvalue() returns a string containing the entire contents of the buffer
print("String = ",strIO.getvalue())
# Change the stream position using seek()
strIO.seek(7)
# Write at the same position
strIO.write("How's life?")
# Returning the final string
print("Final String = ",strIO.getvalue())
String = Hello, How are you? Final String = Hello, How's life??
在這個範例中，使用array()建立一個數組，然後使用tounicode()方法將其轉換為Unicode字串 -
import array
# Create a String
myStr = "Hello, How are you?"
# Array
arr = array.array('u',myStr)
print(arr)
# Modifying the array
arr[0] = 'm'
# Displaying the array
print(arr)
# convert an array to a unicode string using tounicode
print(arr.tounicode())
array('u', 'Hello, How are you?')
array('u', 'mello, How are you?')
mello, How are you?
以上是如何在Python中就地修改字串？的詳細內容。更多資訊請關注PHP中文網其他相關文章！
