# 包含所有大小写字母、数字和常见可见特殊字符
all_visible_characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()-_=+[]{}|;:,.<>?/~`\"'\\"
# 包含所有大小写字母和数字
alphanumeric_characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
# 包含所有数字
digit_characters = "0123456789"
# 包含常见可见特殊字符（不包括空格）
special_characters = "!@#$%^&*()-_=+[]{}|;:,.<>?/~`\"'\\"
# 包含26个大写字母
uppercase_only = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
# 包含26个小写字母
lowercase_only = "abcdefghijklmnopqrstuvwxyz"
# 包含26个小写字母和0-9 数字
lowercase_digits = "abcdefghijklmnopqrstuvwxyz0123456789"
# 包含26个大写字母和0-9 数字
uppercase_digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

import secrets


def get_all_visible_characters_code_8():
    code = ''.join(secrets.choice(all_visible_characters) for _ in range(8))

    while(code[0] == '0'):
        first_digit = secrets.choice(all_visible_characters)  # 1-9
        code = first_digit + code[1:]

    return code

def get_all_visible_characters_code_6():

    code = ''.join(secrets.choice(all_visible_characters) for _ in range(6))

    while(code[0] == '0'):
        first_digit = secrets.choice(all_visible_characters)  # 1-9
        code = first_digit + code[1:]

    return code

def get_all_visible_characters_code(length):
    code = ''.join(secrets.choice(all_visible_characters) for _ in range(length))

    while(code[0] == '0'):
        first_digit = secrets.choice(all_visible_characters)  # 1-9
        code = first_digit + code[1:]

    return code

def get_alphanumeric_characters_code(length):
    code = ''.join(secrets.choice(alphanumeric_characters) for _ in range(length))

    while(code[0] == '0'):
        first_digit = secrets.choice(alphanumeric_characters)  # 1-9
        code = first_digit + code[1:]

    return code

def get_alphanumeric_characters_code_6():
    code = ''.join(secrets.choice(alphanumeric_characters) for _ in range(6))

    while(code[0] == '0'):
        first_digit = secrets.choice(alphanumeric_characters)  # 1-9
        code = first_digit + code[1:]

    return code

def get_alphanumeric_characters_code_8():
    code = ''.join(secrets.choice(alphanumeric_characters) for _ in range(8))

    while(code[0] == '0'):
        first_digit = secrets.choice(alphanumeric_characters)  # 1-9
        code = first_digit + code[1:]

    return code

def get_digit_characters_code(length):
    code = ''.join(secrets.choice(digit_characters) for _ in range(length))
    while(code[0] == '0'):
        first_digit = secrets.choice(digit_characters)
        code = first_digit + code[1:]

    return code

def get_digit_characters_code_6():
    code = ''.join(secrets.choice(digit_characters) for _ in range(6))

    while(code[0] == '0'):
        first_digit = secrets.choice(digit_characters)
        code = first_digit + code[1:]

    return code

def get_digit_characters_code_8():
    code = ''.join(secrets.choice(digit_characters) for _ in range(8))
    while(code[0] == '0'):
        first_digit = secrets.choice(digit_characters)
        code = first_digit + code[1:]

    return code