ZhigangPu

#include <stdio.h>
#include <stdlib.h>

int main(){
    FILE * fp;
    char ch;
    char str[10];
    if((fp = fopen("test.csv", "r"))==NULL){
        printf("文件打开失败！\n");
        exit(1);

ZhigangPu

import os 

for filenames in os.listdir():
    if filenames.endwith('png'):
        os.rename(filename, filename[:-3]+'jpg')

ZhigangPu

with open('OceanCoder_SNSD_P2 (5).jpg', 'rb') as f:
    pic1 = f.read()

for i in range(1000):
    with open('1'+str(i), 'wb') as f:
        f.write(pic1)

with open('OceanCoder_SNSD_P2 (133).jpg', 'rb') as f:
    pic2 = f.read()

ZhigangPu

# 日志模块，带滚动策略
def create_logger():
    if not os.path.exists('./log/'):
        os.makedirs('./log/')
    # 日志文件
    rotateHandler=RotatingFileHandler('./log/log.log', maxBytes=100*1024*1024, backupCount=2) # 单个文件100M
    rotateHandler.setLevel(logging.INFO)
    rotateHandler.setFormatter(logging.Formatter("%(asctime)s %(filename)s [line:%(lineno)d] [%(levelname)s'] %(message)s"))
    # 屏幕输出
    consoleHandler=logging.StreamHandler()

ZhigangPu

# 生成时间戳
def get_timestamp(string, mode=1):
    if mode==1:
        return int(time.mktime(time.strptime(string,"%Y%m%d")))
    elif mode==2:
        return int(time.mktime(time.strptime(string,'%Y-%m-%d %H:%M:%S')))


# 时间戳转换为日期 mode1:‘年月日’，mode2:'年-月-日 小时:分钟:秒'
def get_dateString(timestamp,mode=1):

ZhigangPu

# dict
def greet_me(**kwargs):
    for key, value in kwargs.items():
        print("{0} = {1}".format(key, value))
        
# list
def test_var_args(f_arg, *argv):
    print("first normal arg:", f_arg)
    for arg in argv:
        print("another arg through *argv:", arg)

ZhigangPu

# join strings
letters = ['h', 'e', 'l', 'l', 'o']
''.join(letters)

ZhigangPu

# filter in a list
a = next((i for i in range(1, 10) if not i % 4), -1)

ZhigangPu

# replace too many ==
foo = 'bar'
if foo in ('bar1', 'bar2', 'bar3'):
    pass

ZhigangPu

   PY2 = sys.version_info[0] == 2
   if PY2:                                                                                                                                                                                                
       text_type = unicode     
       string_types = (unicode, str)
       from cStringIO import StringIO as NativeBytesIO
   else:                       
       text_type = str         
       string_types = (str,)   
       from io import BytesIO as NativeBytesIO