To convert the first letter/character of a string to a lowercase in Python, you can use thelower()method and concatenate it with the rest of thestring. You can convert the first letter of a string tolowercaseusing many ways, for example, by using the string slicing +lower(),replace(),...
It is a letter case when all the letters of a string are small. The opposite to lowercase is uppercase when all the letters of a string are capitals. Otherwise, if there are both small and capital letters in a string, it is called a mixed case. How to make a string lowercase in P...
Python variable names must start with a letter or underscore (_) and cannot contain spaces or special characters except _. Rules for naming a variable in Python: A variable name must start with a letter (A-Z or a-z) or an underscore (_). It cannot start with a number (0-9). On...
print"ord(i)+5>=122" transletter+=chr(ord(i)+5-26) print ("jiamihou",transletter) untransletter ="" for i in transletter: if (ord(i))<102: untransletter += chr(ord(i)-5+26) else: untransletter+= chr(ord(i)-5) print (("解码后").decode("utf-8" ), untransletter) ...
-Gordon McMillan, June 1998 Python2.0发布附带了一个包含200个以上模块的可扩展的标准库. 本书简要地介绍每个模块并提供至少一个例子来说明如何使用它. 本书一共包含360个例子. 0.1. 关于本书 "Those people who have nothing better to do than post on the Internet all day long are rarely the ones who...
They can contain only these characters: — Lowercase letters (a through z)— Uppercase letters (A through Z)— Digits (0 through 9)— Underscore (_) They are case-sensitive: thing, Thing, and THING are different names. They must begin with a letter or an underscore, not a digit. Name...
b:(single lowercase letter 单个小写字母) B:(single uppercase letter 单个大写字母) lowercase lower_case_with_underscores UPPERCASE UPPER_CASE_WITH_UNDERSCORES CapitalizedWords(or CapWords, CamelCase, StudlyCaps) mixedCase(differs from CapitalizedWords by initial lowercase character!) ...
s = 'ß' # German lowercase letter 'ß' is equivalent to "ss" print(s.swapcase()) print(s.swapcase().swapcase()) print(s.swapcase().swapcase() == s) Output: 输出: SS ss False GitHubRepository. GitHub存储库中签出更多Python示例。
from random import choice, random from string import ascii_lowercase from time import perf_counter, sleep print( "A letter will appear on screen after a random amount of time,\n" "when it appears, type the letter as fast as possible " "and then press enter\n" ) print("Press enter whe...
Never use the characters 'l' (lowercase letter el), 'O' (uppercase letter oh), or 'I' (uppercase letter eye) as single character variable names. In some fonts, these characters are indistinguishable from the numerals one and zero. When tempted to use 'l', use 'L' instead. ...