使用Python和pyasn1库生成随机长度的TeletexString字符串

以下是使用Python和pyasn1库生成随机长度的TeletexString字符串的示例代码：

import random
from pyasn1.type import univ

def generate_teletexstring(length):
    # Generate random bytes within the valid range of TeletexString (ascii: 0x20-0x7F)
    teletex_data = bytearray(random.randint(0x20, 0x7F) for _ in range(length))
    
    # Create a TeletexString object using the generated bytes
    teletex_string = univ.TeletexString()
    teletex_string.setComponentByPosition(0, teletex_data)
    
    return teletex_string

# Generate a TeletexString of random length between 1 and 1000 characters
random_length = random.randint(1, 1000)
teletex_string = generate_teletexstring(random_length)

# Print the generated TeletexString and its length
print("TeletexString:", teletex_string.prettyPrint())
print("Length:", len(teletex_string))

这个例子将生成一个随机长度的TeletexString字符串。它首先生成一个长度在1到1000之间的随机数，然后使用generate_teletexstring函数生成一个相应长度的TeletexString对象。最后，通过使用prettyPrint方法和len函数，打印出生成的TeletexString的值和长度信息。