随笔分类 -  python

• 多维数组排序
  摘要：依据第二列排序#!/usr/bin/python def takesecond(elem): return elem[1] random = [(3,2,2), (3,4,1), (4,1,0), (1, 3,-1),(5,7,89),(5,2,0),(2,100,90),(2,100,2),(2, 阅读全文
  posted @ 2020-03-03 20:31 YUANya 阅读(333) 评论(0) 推荐(0) 编辑
• replace|同时替换
  摘要：a= 'eeekkksksksk' print a.replace('e','s').replace('s','k') #kkkkkkkkkkkk change={"e":"s","k":'@',"s":"!"} a_new=''.join(change[i] for i in a) print(a_new) ''' sss@@@!@!@!@ '' 阅读全文
  posted @ 2019-07-11 21:09 YUANya 阅读(225) 评论(0) 推荐(0) 编辑
• 依据gff切fa并翻译为蛋白质
  摘要：#!/usr/bin/python import re import sys import gzip change={'A':'T','T':'A','C':'G','G':'C','N':'N'} CODE = { 'GCA' : 'A', 'GCC' : 'A', 'GCG' : 'A', 'GCT' : 'A&# 阅读全文
  posted @ 2019-07-11 21:01 YUANya 阅读(404) 评论(0) 推荐(0) 编辑
• set|lambda|reduce
  摘要：#!/usr/bin/python a=set([i for i in range(4,8)]) b=set([i for i in range(5,12)]) c= sorted(a & b) print c print reduce(lambda x,y:(x-1)*y,c) def func_1(x,y): return (x-1)*y print reduce(func_... 阅读全文
  posted @ 2019-07-11 16:05 YUANya 阅读(158) 评论(0) 推荐(0) 编辑
• zcat|subprocess.check_all|subprocess.Popen|gzip|readline()
  摘要：#!/usr/bin/python from subprocess import check_call import subprocess import gzip ''' $ zcat 160121_I133_FCH5LL5BBXX_L8_RSZADPI007179-107_2.fq.gz |head -4 >o3 $ cat o3 @K00133:143:H5LL5BBXX:8:1101:1... 阅读全文
  posted @ 2019-07-11 15:33 YUANya 阅读(182) 评论(0) 推荐(0) 编辑
• getopt|sys|open|print文件|main()|if __name__ == "__main__"|getline()
  摘要：#!/usr/bin/python import sys import getopt import re def compare(f1,f2,o1,o2,si_line): lines_count=0; in1 = open(f1,"r") in2 = open(f2,"r") ou1 = open(o1,"w") ou2 = open(o2,"w"... 阅读全文
  posted @ 2019-07-10 16:34 YUANya 阅读(120) 评论(0) 推荐(0) 编辑
• 在gff中切fa的内容
  摘要：#!/usr/bin/python import re def readfa(l): col={} arr =[] sca ='' li = open(l) for line in li: if re.match(r'>(\w*)',line): match = re.match(r'>(\w*)',line) ... 阅读全文
  posted @ 2019-07-05 00:59 YUANya 阅读(220) 评论(0) 推荐(0) 编辑
• 形参和实参|默认值|可选实参|tuple|*tuple|args|*args | **kwargs|args[:]|
  摘要：1 #!/usr/bin/python 2 3 def hello(i,greet='long time to see!'): 4 out = "hello "+i+" "+greet 5 nobody = {'as':'123','ad':'1234','om':'ssss'} 6 if i == '2':return nobody 7 ret... 阅读全文
  posted @ 2019-07-04 15:08 YUANya 阅读(221) 评论(0) 推荐(0) 编辑
• raw_input|active:|continue|break|
  摘要：1 a = "please" 2 b = "say something:" 3 c =a+b 4 m = 0 5 a = True 6 while a: 7 m = int(raw_input(c)) 8 print m+1 9 if m>11: 10 a = False 11 12 #please say something:wwww... 阅读全文
  posted @ 2019-07-04 12:48 YUANya 阅读(151) 评论(0) 推荐(0) 编辑
• 字典|字典和数组嵌套|keys()|value()|item()|del
  摘要：python 中没有i++！ 阅读全文
  posted @ 2019-07-04 11:07 YUANya 阅读(367) 评论(0) 推荐(0) 编辑
• 两种大小写比较|elif|
  摘要：1 name = ['alle','mike','tom','jerry','alice','hebe'] 2 for i in name: 3 if i == 'tom': 4 print 'get!' 5 #get! 6 7 if 'ale'not in name :print 'get!' 8 9 #get! 10 a = 'tom' 11 ... 阅读全文
  posted @ 2019-07-04 09:53 YUANya 阅读(233) 评论(0) 推荐(0) 编辑
• del|append()|insert()|pop()|remove()|sort()|sorted|reverse()|len()|range()|min()|max()|sum()|[:]|区分两种列表复制|
  摘要：问题：列表可以用[ ]or( )??? 阅读全文
  posted @ 2019-07-03 20:46 YUANya 阅读(237) 评论(0) 推荐(0) 编辑
• lower()|upper()|Traceback|title()|字符串合并|rstrip|lstrip|str()|
  摘要：1 print ("hello,world!") 2 sentence = "yyyy" 3 print (sentence.lower()) 4 print (sentence.upper()) 5 6 #print (sentenc) 7 8 #hello,world! 9 #yyyy 10 #YYYY 11 #Traceback (most recent call l... 阅读全文
  posted @ 2019-07-03 10:00 YUANya 阅读(237) 评论(0) 推荐(0) 编辑