# NOTE: Everything below here is deprecated. Use string methods instead. # This stuff will go away in Python 3.0. # Backward compatible names for exceptions index_error = ValueError atoi_error = ValueError atof_error = ValueError atol_error = ValueError # convert UPPER CASE letters to lower ...
7.'stRINg lEArn ' 8.>>> 9.>>> str.rjust(20) #str右对齐 10.' stRINg lEArn' 11.>>> 12.>>> str.zfill(20) #str右对齐,左边填充0 13.'00000000stRINg lEArn' 大小写转换 1.>>> str='stRINg lEArn' 2.>>> 3.>>> str.upper() #转大写 4.'STRING LEARN' 5.>>> 6.>>> str.low...
# Convert uppercase characters to their ASCII decimal numbers ascii_upper_case = string.ascii_uppercase # Output: ABCDEFGHIJKLMNOPQRSTUVWXYZ for one_letter in ascii_upper_case[:5]: # Loop through ABCDE print(ord(one_letter)) 1. 2. 3. 4. 5. 6. 7. Output: 65 66 67 68 69 1. 2....
ascii_upper_case = string.ascii_uppercase# Output: ABCDEFGHIJKLMNOPQRSTUVWXYZ forone_letterinascii_upper_case[:5]:# Loop through ABCDE print(ord(one_letter)) Output: 65 66 67 68 69 # Convert digit characters to their ASCII decimal numbers ascii_digits = string.digits# Output: 0123456789 fo...
, I have explained how tocheck if a string contains a substring in Pythonusing different methods, such as theinoperator,find(),index(), orcount()method, etc. I hope all these examples I explained here will be helpful to you. I always recommend using the in operator for this case....
Check if a Python String Contains a Substring Replacing a String in Python You can also read these tutorials: Basic Input, Output, and String Formatting in Python Python’s F-String for String Interpolation and Formatting Splitting, Concatenating, and Joining Strings in Python ...
split([delim]) # Split string into list of substrings s.startswith(prefix) # Check if string starts with prefix s.strip() # Strip leading/trailing space s.upper() # Convert to upper case 字符串的可变性 字符串是“不可变的”或者说是只读的。一旦创建,字符串的值就无法修改。 >>> s = ...
总结一下,鉴于类似序列的数据结构的重要性,Python 通过在__iter__和__contains__不可用时调用__getitem__来使迭代和in运算符正常工作。 第一章中的原始FrenchDeck也没有继承abc.Sequence,但它实现了序列协议的两种方法:__getitem__和__len__。参见示例 13-2。
# main.pyimportosimportstring a=102content ="this is a very long string contains: %s, %s"%(string.ascii_lowercase, string.ascii_uppercase)ifnot(len(content)==0):if( (1+2) % (4+3) ) ==1andaisnotNone:pass 使用flake8 检查后得到的结果将会是这样: ...
将一个字符串转换为大写: uppercase = lambda s: s.upper() result = uppercase("hello") print(result) # 输出:HELLO #7. 判断一个数是否为质数: is_prime = lambda x: all(x % i != 0 for i in range(2, int(x**0.5)+1)) and x > 1 result = is_prime(7) print(result) # 输出...