Python reads multiple lines of data

The following is an example of reading multiple rows of data in python. It has a good reference value and I hope it will be helpful to everyone. Let’s take a look together

1. Preface

This article mainly uses python’s raw_input() function to read in multiple lines of variable-length data. The sign of the end of input is to press Enter without entering a number, and fill in the specific number as a two-dimensional matrix

2. Code

def get2DlistData():
 res = []
 
 inputLine = raw_input() #以字符串的形式读入一行
 #如果不为空字符串作后续读入
 while inputLine != '': 
  listLine = inputLine.split(' ') #以空格划分就是序列的形式了
  listLine = [int(e) for e in listLine ] #将序列里的数由字符串变为int类型
  res.append( listLine )
  
  inputLine = raw_input()
 
 return res
 
def get2DMatData( inList , val ):
 ''' 
 输入：inList为不等长的二维数组，val为需填充的值
 输出：np.array的形式输出填补完的二维矩阵
 '''
 maxCols = 0
 #获得最大长度的子序列
 for i in range( len( inList ) ):
  lenI = len( inList[i] )
  if lenI > maxCols:
   maxCols= lenI
 #对每个子序列作填充   
 for i in range( len( inList ) ):
  num = len( inList[i] )
  while(num <= maxCols):
   inList[i].append( val )
   num += 1
 
 return np.array( inList , dtype = np.int64 ) 
if __name__==&#39;__main__&#39;:
 inData = get2DimData()
 print inData
 print &#39;\n&#39;
 
 matArray = get2DMatData(inData , 0)
   
 print( matArray )

3. Running results

##Related recommendations:

Simple use of python reading files and time/sys module

The above is the detailed content of Python reads multiple lines of data. For more information, please follow other related articles on the PHP Chinese website!