需要深入了解python中的字符串

# 使用单引号
s1 = 'Hello, World!'

# 使用双引号
s2 = "Hello, World!"

# 使用三引号（可以包含多行）
s3 = '''Hello,
World!'''

# 使用字符串的format方法
name = "Alice"
greeting = "Hello, {}!".format(name)

s = "Hello, World!"
print(s[0])  # 输出 'H'
print(s[1:5])  # 输出 'ello'

s1 = "Hello"
s2 = "World"
s3 = s1 + " " + s2
print(s3)  # 输出 'Hello World'

t = "A"
print(t * 5)  # 输出 'AAAAA'

s = "Hello, World!"
print(s.find("World"))  # 输出 7

s = "Hello, World!"
new_s = s.replace("World", "Python")
print(new_s)  # 输出 'Hello, Python!'

s = "apple,banana,grape"
fruits = s.split(",")
print(fruits)  # 输出 ['apple', 'banana', 'grape']

# 使用join方法
strings = ["Hello", "World"]
result = " ".join(strings)
print(result)  # 输出 'Hello World'

# 使用原始字符串
path = r'C:\Users\Documents\file.txt'
print(path)  # 输出 'C:\Users\Documents\file.txt'

# 使用三引号
multi_line_string = '''Hello,
World!'''
print(multi_line_string)