加入在Python

Question

2個CSV文件，我想將兩個CSV文件導入到一個這樣的：

**file 1:** 
feb,55,1.23,..,..,0 
mar,65,2.33,..,..,1 

**file 2:** 
feb,55,..,12,KL,.. 
mar,65,..,10,MN,.. 

所以輸出會是這樣的：

feb,55,1.23,12,KL,0 
mar,65,2.33,10,MN,1 

我下面的代碼片段沒有按」 t works：

f1=[li.split(',') for li in open("file1.csv","r+")] 
f2=[lj.split('\t') for lj in open("file2.csv","r+")] 

def joinL(x,y): 
    list=[] 
    for n in x: 
     for m in y: 
      if n[0]==m[0]: 
       list.append(m) 
    return list 

print joinL(f1,f2) 

您能否請幫助 謝謝！

Answer 1

這個工作對我來說：

with open('filename1', 'r') as fl1: 
    f1 = [i.split(',') for i in fl1.read().split('\n')] 

with open('filename2', 'r') as fl2: 
    f2 = [i.split(',') for i in fl2.read().split('\n')] 

f3 = [[a if b is None or b==len(b)*b[0] else b for a,b in map(None,x,y)] for x,y in zip(f1,f2)] 

for i in f3: 
    for j in i: 
     print j, 
    print 

[OUTPUT] 
feb,55,1.23,12,KL,0 
mar,65,2.33,10,MN,1 

注意，你在你的文字有一個小的失誤。它應該是2.33而不是2,33。

這裏是EXACTLY我使用的代碼：

#my_script.py 
with open('t1.txt', 'r') as fl1: 
    f1 = [i.split(',') for i in fl1.read().split('\n')] 

with open('t2.txt', 'r') as fl2: 
    f2 = [i.split(',') for i in fl2.read().split('\n')] 

f3 = [[a if b is None or b==len(b)*b[0] else b for a,b in map(None,x,y)] for x,y in zip(f1,f2)] 

for i in f3: 
    for j in i: 
     print j, 
    print 

---

#t1.txt 
feb,55,1.23,..,..,0 
mar,65,2.33,..,..,1 

---

#t2.txt 
feb,55,..,12,KL,.. 
mar,65,..,10,MN,..