張乃元Python字串string方法methods
教學影片371
vscode和w3school截圖
程式碼
txt = "張乃元 love 芒果, 芒果 are my favorite 水果"
print(txt.zfill(40))
print(txt.count("芒果"))
print('內建函數len(length)',len(txt))
print('find',txt.find("芒果"))
print('rfind',txt.rfind("芒果"))
print("print列印,字串string,字元character的組合")
print(txt.title())
print(txt.lower())
print(txt.upper())
print(txt.swapcase())
c = chr(10820)
print(c)
for i in range(33320, 33340):
print(chr(i))
for i in range(80, 100):
print(chr(i))
W3schools字串方法列表
| 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 |
補充
character - 字元字串=>字元組成
length(字串長度> chr(字碼)
zfill(20)=>填入20個0 upper()=>大寫 lower()=>小寫 swapcase=> 大寫=>小寫 bin => 2進制 hexadecimal => 16進制 decimal => 10進制 abs => 絕對值
截圖清晰，迴圈，補充，神優秀。https://naiyuanzhang1226.blogspot.com/2024/02/pythonstringmethods.html
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