Write a Python function to check whether a string is pangram or not. (Assume the string passed in does not have any punctuation)

当然可以，首先你需要了解什么是帕格拉姆（Pangram），它是指包含英语字母表所有26个字母的句子或短语。下面是一个简单的Python函数，用于检查给定字符串是否为帕格拉姆：

def is_pangram(s):
    alphabet = "abcdefghijklmnopqrstuvwxyz"
    for char in alphabet:
        if char not in s.lower():
            return False
    return True

# 测试示例
s = "The quick brown fox jumps over the lazy dog"
if is_pangram(s):
    print(f"{s} is a pangram.")
else:
    print(f"{s} is not a pangram.")

# 使用这个函数检查输入的字符串是否为帕格拉姆
input_string = input("Enter a string without punctuation: ")
if is_pangram(input_string):
    print("The string is a pangram.")
else:
    print("The string is not a pangram.")