Python FOR循环打印函数中的列表 [英] Python FOR Loop in a list in a print function

问题描述

我还有一个问题，与我在这里有一样的问题 - >
Python double FOR循环无线程

基本上，我希望第一个循环在这里列举列表中的每个学科，然后在里面打印功能，我希望打印每一个在该列表中的数字，所以它出现像8 - 4 - 5 - 7等。

 < （3）））+\ n+（str（（cflist [i]））（$ {code> -------------* 7）））
 ... 
运行完整的代码使得大网格充满了这些东西，但不同的
科目每一行。 （NTL here）
 ------------------------------------------ ------------------------------------------------- 
 NTL |< generator object< genexpr>在0x0000000003404900> 
 ---------------------------------------------- --------------------------------------------- 
  

我有部分代码工作，所以每个列表编号都在另一个主题行中，所以我会有 NTL | 8.2 和下一行 ENT | 5.7 但是我希望所有这些数字都像 NTL | 8.2 - 5.7 - 等等

完成！

  -------------------------------------- -------------------------------------------------- --- 
 NTL | 7.2 8.4 6.7 5.3 4.8 
 -------------------------------- -------------------------------------------------- --------- 
  

解决方案

生成器表达式中的code> str 将会打印 str 版本的生成器表达式，而不是像您期望的那样：

 >>> str（（x对于范围（3）中的x））
'<发生器对象< genexpr>在0xb624b93c>'
  

尝试如下所示：

（$ {pre $ ）
print（str） （item +|+ strs +\\\
+（-------------* 7）））


I have another question about somewhat the same problem as I had here -> Python double FOR loops without threading

Basically, I want the first for loop down here to enumerate over every school subject in a list, and then inside the print function, I want it to print every number that is in that list, so It comes out like 8 - 4 - 5 - 7 etc.

    for item in store:
        print(str(item + "|" + (str((cflist[i]) for i in range(3))) + "\n" + ("-------------" * 7)))
...
Running the complete code makes a big grid filled with these things, but different
subjects each line. (NTL here)
-------------------------------------------------------------------------------------------
NTL|<generator object <genexpr> at 0x0000000003404900>
-------------------------------------------------------------------------------------------

I have had the code working partially, so that each list number was in another subject line, so I would have NTL|8.2 and the next line ENT|5.7 But I want all those numbers to display after each other like NTL|8.2 - 5.7 - etc

EDIT: Done!

-------------------------------------------------------------------------------------------
NTL|7.2 8.4 6.7 5.3 4.8
-------------------------------------------------------------------------------------------

解决方案

Using str on a generator expression will print str version of generator expression, not it's items as you expected:

>>> str((x for x in range(3)))
'<generator object <genexpr> at 0xb624b93c>'

Try something like this:

for item in store:
   strs = " ".join([cflist[i]) for i in range(3)])
   print(str(item + "|" + strs + "\n" + ("-------------" * 7)))

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