def del_blank_line(filename): # 清除文件空白行"""
清除文件空白行空白行
:param filename: 文件名称
:return: True 成功；False 失败
"""try:
with open(filename, "r+", encoding="utf-8") as infp:
lines = infp.readlines() # 把源文件内容读出来保存在lines中
with open(filename, "w+", encoding="utf-8") as outfp:
for li in lines:
if li.split(): # 判断是否为空白行
outfp.writelines(li) # 将操作后的源文件覆盖写回except IOError:
print("%s 文件不存在或无操作权限" % filename)
return False
else:
return True
清除文件空白行
def get_ip_list(filename, repeat=False):
"""
在文件中获取合法的IP地址
:param filename: 文件名称
:param repeat: 去除重复行，True去除，False不去除
:return: 返回ip地址序列
"""import re
try:
with open(filename, "r", encoding="utf-8") as file1:
line = file1.read()
pattern = re.compile(
r"(?:\b(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])\b\.){3}(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])\b")
list_ip = pattern.findall(line)
if len(list_ip) == 0:
return list_ip
except IOError:
print("%s 文件不存在或无操作权限" % filename)
return False
else:
if repeat == True:
return set(list_ip)
elif repeat == False:
return list_ip
在文件中获取合法的IP地址
def get_check_code(n = 6):
"""
获取有大小写字母、数字组成的随机n位验证码
:param num: 验证码位数，默认为6
:return: 返回n位验证码
"""import random
check_code = str()
code = str()
for i in range(n):
ret = random.randint(0, 9)
if ret == 0 or ret == 1 or ret == 4 or ret == 7:
code = str(ret)
elif ret == 2 or ret == 5 or ret == 8:
code = chr(random.randint(65, 90))
elif ret == 3 or ret == 6 or ret == 9:
code = chr(random.randint(97, 122))
check_code = check_code + code
return check_code
