0

这是我对伪代码的翻译。该代码建议可以将多个列表或数组写入 .dat 文件。我试图尽可能地忠实于伪代码格式，以免在调试过程中迷失方向。为了篇幅，我省略了实际的伪代码。我知道如何将所有内容作为字符串写入 .txt 或 .csv，但是否可以将它们写入同一个文件，允许每个对象保持其原始值？（Num=Num 和 str=str）

#THIS IS THE PREMISE OF THE PSEUDOCODE
#Cooper College maintains a master file of students and credits
#earned. Each semester the master is updated with a transaction
#file that contains credits earned during the semester.
#Each file is sorted in Student ID number order.

这就是我试图翻译成 Python 的内容

#getReady()  
#   open master "studentFile.dat"
#   open trans "semesterCredits.dat"
#   open newMaster "updatedStudentFile.dat"
#   readMaster()
#   readTrans()
#   checkBoth()
#return
#
#readMaster()
#   input masterID, masterName, masterCredits from master
#   if eof then
#      masterID = HIGH_VALUE
#   endif
#return

这就是我试图用来创建起始文件的内容

#EACH LIST HAS A RANGE OF [0, 4]
masterID =[100000,100001,100002,100003]
masterName =['Bevis, Ted','Finch, Harold','Einstein, Al','Queen, Liz']
masterCredits = [56,15,112,37]

master = open('studentFile.dat','wb')
master.write(masterID,masterName,masterCredits)
print master.readlines()


#THIS IS MY TRACEBACK ERROR

#Traceback (most recent call last):
#  File "C:/Users/School/Desktop/Find the Bugs Ch7/debug07-03start.py",     
#line 6, in <module>
#master.write(masterID,masterName,masterCredits)
#TypeError: function takes exactly 1 argument (3 given)

预期输出

print master.readlines()
[[100001,'Bevis, Ted',56],[100002,'Finch, Harold',15],[100003,'Einstein, Al',112]...]
4

2 回答 2

1

您可以通过以下方式获取您的愿望清单zip：

>>> zip(masterID,masterName,masterCredits)
[(100000, 'Bevis, Ted', 56), (100001, 'Finch, Harold', 15), (100002, 'Einstein, Al', 112), (100003, 'Queen, Liz', 37)]

然后你所需要的就是遍历你的压缩列表并写入文件：

with open('studentFile.dat','wb') as master:
    for i,j,k,z in zip(masterID,masterName,masterCredits) :
          master.write(','.join((str(i),j,k,str(z))))
于 2015-03-15T21:02:56.210 回答
0

write需要一个字符串，而您正在传递一堆对象。这些需要在打印之前转换为字符串。一种方法是

master.write(','.join([masterID,masterName,masterCredits]))

您从项目中列出一个列表，用逗号将它们连接起来并写入文件。

于 2015-03-15T20:32:00.640 回答