Python str.capitalize()和str.title()的区别

title() 和 capitalize() 方法都有类似的功能：就是将第一个字符大写。下面下面来看看它们两个的区别。

方法1：title()

Python中的 title() 函数是Python字符串方法，用于将字符串中每个单词的第一个字符转换为大写，其余字符转换为小写，并返回一个新字符串。

语法: str.title()

参数: None

返回值: 这个函数返回一个字符串，每个单词的首字母都是大写的，其余的字母都是小写。

示例代码：

# Python Title() Method Example

str1 = 'geekdocs foR geEks'
str2 = str1.title()
print('First Output after Title() method is = ', str2)

# observe the original string
print('Converted String is = ', str1.title())
print('Original String is = ', str1)

# Performing title() function directly
str3 = 'ANDY pass JaVa'.title()
print('Second Output after Title() method is = ', str3)

str4 = 'student anD teaCher'.title()
print('Third Output after Title() method is = ', str4)

str5 = '1122'.title()
print('Fourth Output after Title() method is = ', str5)

运行结果：

First Output after Title() method is =  geekdocs For Geeks
Converted String is =  geekdocs For Geeks
Original String is =  geekdocs foR geEks
Second Output after Title() method is =  Andy Pass Java
Third Output after Title() method is =  Student And Teacher
Fourth Output after Title() method is =  1122

方法2：capitalize()

在Python中， capitalize() 方法将字符串的第一个字符转换为大写字母(大写)。如果字符串的第一个字符是大写的，那么它就会返回原始字符串。

语法-

str.capitalize()

参数: NA

返回类型: 该函数返回一个首字母为大写，其余字母为小写的字符串。

例子:

# Python program to demonstrate the
# use of capitalize() function

# capitalize() first letter of
# string.
name = "geekdocs for geeks"\n
print(name.capitalize())

# demonstration of individual words
# capitalization to generate camel case
name1 = "geekdocs"\nname2 = "for"\nname3 = "geeks"\nprint(name1.capitalize() + name2.capitalize() + name3.capitalize())

输出结果：

geekdocs for geeks
geekdocsForGeeks

title()和capitalize()的区别

它们之间的区别是：Python字符串方法 title() 返回一个字符串的副本，其中所有单词的第一个字符都被大写，而字符串方法 capitalize() 返回一个字符串的副本，其中只有整个字符串的第一个单词被大写。

例子

str = "geekdocs for geeks"\nstr.title() # will return geekdocs For Geeks
str.capitalize() #will return geekdocs for geeks

示例代码：

str1 = "my name is abc"\nstr2 = "geekdocs for geeks"\n
# using title()
print(str1.title())
print(str2.title())

# using capitalize()
print(str1.capitalize())
print(str2.capitalize())

输出结果：

My Name Is Abc
geekdocs For Geeks
My name is abc
geekdocs for geeks