Write a Python program to lowercase the first n characters in a string. Sample Solution: Python Code: # Define a string 'str1'.str1='W3RESOURCE.COM'# Convert the first four characters of the string to lowercase and concatenate them with the remaining characters.# Print the modified string....
print(string2) print(string3) Output: Explanation: Here, Python allows using different types of quotation marks, but they must be paired correctly. 8. Variable Naming Rules Python variable names must start with a letter or underscore (_) and cannot contain spaces or special characters except...
Explanation: Here, sum() calculates the total ASCII value of all characters in the string. round() Function in Python The round() function rounds off a floating-point number to a specified number of decimal places. Example 1: Python 1 2 3 4 # Rounding a floating-point number num = ...
fourth_string = first_string + second_string print(fourth_string) fifth_string = fourth_string +" "+ third_string print(fifth_string) Output: Zhouluobo Zhouluobo Learn Python 重复:字符串可以用 * 符号重复。例如: print("Ha"*3) Output: HaHaHa 索引和切片:我们已经确定字符串是从零开始索引的,...
The object or objects that you’re interpolating into the string literalThe conversion specifiers work as replacement fields. In the above example, you use the %s combination of characters as a conversion specifier. The % symbol marks the start of the specifier, while the s letter is the conve...
string_3[0:4] This will return all characters starting from the number before the colon (0, or the first character) up to but not including the index after the colon (4). In this case, the first four letters of the string are returned: 'This' String Operators The + and * operator...
The first loop right-aligns each word, the second centers it, and the third left-aligns it. Each output line is exactly 20 characters wide, making it easy to create aligned columns of text. $ python main.py | sky| | fork| | small| ...
Then we used the bracket operators to get the first four characters. We used [:4] to indicate that we want four characters from the beginning of the string. This is the same as using [0:4]. Next, we used the replace function to change the “o” character to the “0” character. ...
1. Python数据类型(6个) 1.1 数值型(number) 1.2 字符型(string) 字符串常用方法 转义字符 可迭代性 f-string 1.3 列表(list) 1.4 字典(dictionary) 1.5 集合(set) 1.6 元组(tuple) 1.7 内存视图Memoryview 2. 动态引用、强类型 3. 二元运算符和比较运算 4. 标量类型 5. 三元表达式 ...
first_string = "Zhou" second_string = "luobo" third_string = "Learn Python" fourth_string = first_string + second_string print(fourth_string) fifth_string = fourth_string + " " + third_string print(fifth_string) Output: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Zhouluobo Zhou...