將while循環的輸出寫入多個文本文件

Question

我有兩個問題：while循環在1.1而不是1結束；如何將每個alpha_min值的文本文件保存為編寫代碼的方式，僅將alpha_min的最后一條消息保存在文本文件中？

alpha_min = 0
alpha_max = 1

while (alpha_min < alpha_max):
    alpha_min += 0.1
    #Length of message 
    length_msg = (alpha_min * n)
    len_msg = int(length_msg)
    print(alpha_min)

    #Generates random messages, 1D vectora consisting of 1s and 0s for different values of alpha
    msg = np.random.randint(2, size= len_msg)
    print(msg)

    #Save messages in text format representing each bit as 0 or 1 on a separate line
    msg_text_file = open("msg_file.txt", "w")  # Path of Data File
    msg_text_file.write("\n".join(map(lambda x: str(x), msg)))
    msg_text_file.close()

Answer 1

您只應打開一次文件，然后最后關閉它，因為您現在正在做的是在每次迭代時覆蓋文件（或者您可以使用添加而不是寫入）

alpha_min = 0
alpha_max = 1



while (alpha_min < alpha_max):
    alpha_min += 0.1
    #Length of message 
    length_msg = (alpha_min * n)
    len_msg = int(length_msg)
    print(alpha_min)

    #Generates random messages, 1D vectora consisting of 1s and 0s for different values of alpha
    msg = np.random.randint(2, size= len_msg)
    print(msg)

    #Save messages in text format representing each bit as 0 or 1 on a separate line
    msg_text_file = open("msg_file_{}.txt".format(alpha_min), "w")  # Path of Data File
    msg_text_file.write("\n".join(map(lambda x: str(x), msg)))
    msg_text_file.close()