范雅惠python字串string方法methods
Python
荷蘭的電腦程式設計人員Guido Van Rossum 建立了Python。 Python 是一種廣泛使用的程式設計語言，用於 Web 應用程式、軟體開發、資料科學與機器學習 (ML)。開發人員使用 Python 的原因，在於 Python 效率高又容易學習，並且可以在許多不同的平台上執行。Python 軟體可以免費下載，與所有類型的系統完美整合，還可以加快開發速度。VS Code與w3schools截圖
程式碼
txt = "hello范雅惠, and welcome to my world.ctrl+A"
x = txt.capitalize()
print (x)
print(txt.replace("雅惠","啞啞"))
a = "Ha,范某某很Handsome,很變態!很詭異!我使用w3schools學習,也會使用vsCode開發環境"
b = a.replace('變態','瀟灑')
print (a)
print (b)
print ('幾個很?', a.count('使'))
print ('很在0,1..位置', a.find('很'))
print ('很在0,1..位置', a.rfind('用'))
print ('a的長度',len(a))
print('英文大寫',a.upper())
print('英文小寫',a.lower())
txt = "HELLO,將第一個字母轉成大寫。"
x = txt.capitalize()
print (x)
print (txt.casefold())
y = txt.center(30)
print(txt.center(30))
print(y)
print(len(y))
w3schools字串方法列表
https://www.w3schools.com/python/python_ref_string.asp| Method | Description |
|---|---|
| capitalize() | Converts the first character to upper case |
| casefold() | Converts string into lower case |
| center() | Returns a centered string |
| count() | Returns the number of times a specified value occurs in a string |
| encode() | Returns an encoded version of the string |
| endswith() | Returns true if the string ends with the specified value |
| expandtabs() | Sets the tab size of the string |
| find() | Searches the string for a specified value and returns the position of where it was found |
| format() | Formats specified values in a string |
| format_map() | Formats specified values in a string |
| index() | Searches the string for a specified value and returns the position of where it was found |
| isalnum() | Returns True if all characters in the string are alphanumeric |
| isalpha() | Returns True if all characters in the string are in the alphabet |
| isascii() | Returns True if all characters in the string are ascii characters |
| isdecimal() | Returns True if all characters in the string are decimals |
| isdigit() | Returns True if all characters in the string are digits |
| isidentifier() | Returns True if the string is an identifier |
| islower() | Returns True if all characters in the string are lower case |
| isnumeric() | Returns True if all characters in the string are numeric |
| isprintable() | Returns True if all characters in the string are printable |
| isspace() | Returns True if all characters in the string are whitespaces |
| istitle() | Returns True if the string follows the rules of a title |
| isupper() | Returns True if all characters in the string are upper case |
| join() | Converts the elements of an iterable into a string |
| ljust() | Returns a left justified version of the string |
| lower() | Converts a string into lower case |
| lstrip() | Returns a left trim version of the string |
| maketrans() | Returns a translation table to be used in translations |
| partition() | Returns a tuple where the string is parted into three parts |
| replace() | Returns a string where a specified value is replaced with a specified value |
| rfind() | Searches the string for a specified value and returns the last position of where it was found |
| rindex() | Searches the string for a specified value and returns the last position of where it was found |
| rjust() | Returns a right justified version of the string |
| rpartition() | Returns a tuple where the string is parted into three parts |
| rsplit() | Splits the string at the specified separator, and returns a list |
| rstrip() | Returns a right trim version of the string |
| split() | Splits the string at the specified separator, and returns a list |
| splitlines() | Splits the string at line breaks and returns a list |
| startswith() | Returns true if the string starts with the specified value |
| strip() | Returns a trimmed version of the string |
| swapcase() | Swaps cases, lower case becomes upper case and vice versa |
| title() | Converts the first character of each word to upper case |
| translate() | Returns a translated string |
| upper() | Converts a string into upper case |
| zfill() | Fills the string with a specified number of 0 values at the beginning |
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