Python String isspace() 方法
Python String isspace()是用于字符串处理的内置方法。如果字符串中的所有字符都是空白字符,则 isspace() 方法返回“True”,否则返回“False”。此函数用于检查参数是否包含所有空格字符,例如:
- ' ' - 空间
- '\t' - 水平制表符
- '\n' - 换行符
- '\v' - 垂直制表符
- '\f' - 饲料
- '\r' - 回车
Syntax:
string.isspace()
Parameters:
isspace() does not take any parameters
Returns:
- True – If all characters in the string are whitespace characters.
- False – If the string contains 1 or more non-whitespace characters.
示例 1
Input : string = 'Geeksforgeeks'
Output : False
Input : string = '\n \n \n'
Output : True
Input : string = 'Geeks\nFor\nGeeks'
Output : False
Python3
# Python code for implementation of isspace()
# checking for whitespace characters
string = 'Geeksforgeeks'
print(string.isspace())
# checking if \n is a whitespace character
string = '\n \n \n'
print(string.isspace())
string = 'Geeks\nfor\ngeeks'
print( string.isspace())
Python3
# Python implementation to count whitespace characters in a string
# Given string
# Initialising the counter to 0
string = 'My name is Ayush'
count=0
# Iterating the string and checking for whitespace characters
# Incrementing the counter if a whitespace character is found
# Finally printing the count
for a in string:
if (a.isspace()) == True:
count+=1
print(count)
string = 'My name is \n\n\n\n\nAyush'
count = 0
for a in string:
if (a.isspace()) == True:
count+=1
print(count)
输出:
False
True
False
示例 2:实际应用
给定Python中的字符串,计算字符串中空白字符的数量。
Input : string = 'My name is Ayush'
Output : 3
Input : string = 'My name is \n\n\n\n\nAyush'
Output : 8
算法:
- 逐个字符地遍历给定的字符串,直到它的字符,检查字符是否是空白字符。
- 如果是空白字符,则将计数器加 1,否则遍历下一个字符。
- 打印计数器的值。
Python3
# Python implementation to count whitespace characters in a string
# Given string
# Initialising the counter to 0
string = 'My name is Ayush'
count=0
# Iterating the string and checking for whitespace characters
# Incrementing the counter if a whitespace character is found
# Finally printing the count
for a in string:
if (a.isspace()) == True:
count+=1
print(count)
string = 'My name is \n\n\n\n\nAyush'
count = 0
for a in string:
if (a.isspace()) == True:
count+=1
print(count)
输出:
3
8