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converting list of lists into matrix [closed]

-1

$begingroup$

class Matrix(object):
def init(self, matrix):
'''(Matrix, list)-> NoneType
creates a data attribute elements and instantiate it to the matrix.

 Preconditions: list e contains 2 sublists, all the sublists in e have the same length.

 Complete the instance variable definitions DO NOT CHANGE THE VARIABLE NAMES. Feel free to
 add new ones
 '''
 self.elements = matrix
 self.cols = len(matrix) # number of columns
 self.rows = len(matrix[0]) # number of rows
 self.matempty = [] #create the empty list
 self.dididi = ''#create the empty str

def __str__(self):
 '''(Matrix) -> str 
 returns a string representation of the elements of the matrix. When passed to print() this
 representation should result in the original matrix being displayed as follows: each row
 will be displayed on a separate line, with each element in a row separated from the next by
 one, and only one blank space. The string representation should not contain any additional
 blank spaces. Print nothing if the matrix is empty.

 >>> print(Matrix([[1,2], [3,4]]))
 1 2
 3 4
 >>> print(Matrix([[0,-1.5,2.0], [-1, 4.5, 0]]))
 0 -1.5 2.0
 -1 4.5 0 
 >>> print(Matrix([[]]))

 '''
 for i in range(0,self.rows):
 self.dididi += 'n'
 for j in range(0,self.cols):
 self.dididi += '%g ' %(self.elements[i][j])
 return self.dididi

the second one cannot be inputed

python matrix

share|improve this question

asked Mar 29 at 0:39

JasmineJasmine

1

$endgroup$

closed as unclear what you're asking by Kiritee Gak, Shamit Verma, Mark.F, Dawny33♦ Mar 29 at 9:27

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Coursework / Assignment problem
  $endgroup$
  – Shamit Verma
  Mar 29 at 3:23
  

  
  
  
  

add a comment | 

-1

$begingroup$

class Matrix(object):
def init(self, matrix):
'''(Matrix, list)-> NoneType
creates a data attribute elements and instantiate it to the matrix.

 Preconditions: list e contains 2 sublists, all the sublists in e have the same length.

 Complete the instance variable definitions DO NOT CHANGE THE VARIABLE NAMES. Feel free to
 add new ones
 '''
 self.elements = matrix
 self.cols = len(matrix) # number of columns
 self.rows = len(matrix[0]) # number of rows
 self.matempty = [] #create the empty list
 self.dididi = ''#create the empty str

def __str__(self):
 '''(Matrix) -> str 
 returns a string representation of the elements of the matrix. When passed to print() this
 representation should result in the original matrix being displayed as follows: each row
 will be displayed on a separate line, with each element in a row separated from the next by
 one, and only one blank space. The string representation should not contain any additional
 blank spaces. Print nothing if the matrix is empty.

 >>> print(Matrix([[1,2], [3,4]]))
 1 2
 3 4
 >>> print(Matrix([[0,-1.5,2.0], [-1, 4.5, 0]]))
 0 -1.5 2.0
 -1 4.5 0 
 >>> print(Matrix([[]]))

 '''
 for i in range(0,self.rows):
 self.dididi += 'n'
 for j in range(0,self.cols):
 self.dididi += '%g ' %(self.elements[i][j])
 return self.dididi

the second one cannot be inputed

python matrix

share|improve this question

asked Mar 29 at 0:39

JasmineJasmine

1

$endgroup$

closed as unclear what you're asking by Kiritee Gak, Shamit Verma, Mark.F, Dawny33♦ Mar 29 at 9:27

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Coursework / Assignment problem
  $endgroup$
  – Shamit Verma
  Mar 29 at 3:23
  

  
  
  
  

add a comment | 

$begingroup$

class Matrix(object):
def init(self, matrix):
'''(Matrix, list)-> NoneType
creates a data attribute elements and instantiate it to the matrix.

 Preconditions: list e contains 2 sublists, all the sublists in e have the same length.

 Complete the instance variable definitions DO NOT CHANGE THE VARIABLE NAMES. Feel free to
 add new ones
 '''
 self.elements = matrix
 self.cols = len(matrix) # number of columns
 self.rows = len(matrix[0]) # number of rows
 self.matempty = [] #create the empty list
 self.dididi = ''#create the empty str

def __str__(self):
 '''(Matrix) -> str 
 returns a string representation of the elements of the matrix. When passed to print() this
 representation should result in the original matrix being displayed as follows: each row
 will be displayed on a separate line, with each element in a row separated from the next by
 one, and only one blank space. The string representation should not contain any additional
 blank spaces. Print nothing if the matrix is empty.

 >>> print(Matrix([[1,2], [3,4]]))
 1 2
 3 4
 >>> print(Matrix([[0,-1.5,2.0], [-1, 4.5, 0]]))
 0 -1.5 2.0
 -1 4.5 0 
 >>> print(Matrix([[]]))

 '''
 for i in range(0,self.rows):
 self.dididi += 'n'
 for j in range(0,self.cols):
 self.dididi += '%g ' %(self.elements[i][j])
 return self.dididi

the second one cannot be inputed

python matrix

share|improve this question

asked Mar 29 at 0:39

JasmineJasmine

1

$endgroup$

 Preconditions: list e contains 2 sublists, all the sublists in e have the same length.

 Complete the instance variable definitions DO NOT CHANGE THE VARIABLE NAMES. Feel free to
 add new ones
 '''
 self.elements = matrix
 self.cols = len(matrix) # number of columns
 self.rows = len(matrix[0]) # number of rows
 self.matempty = [] #create the empty list
 self.dididi = ''#create the empty str

def __str__(self):
 '''(Matrix) -> str 
 returns a string representation of the elements of the matrix. When passed to print() this
 representation should result in the original matrix being displayed as follows: each row
 will be displayed on a separate line, with each element in a row separated from the next by
 one, and only one blank space. The string representation should not contain any additional
 blank spaces. Print nothing if the matrix is empty.

 >>> print(Matrix([[1,2], [3,4]]))
 1 2
 3 4
 >>> print(Matrix([[0,-1.5,2.0], [-1, 4.5, 0]]))
 0 -1.5 2.0
 -1 4.5 0 
 >>> print(Matrix([[]]))

 '''
 for i in range(0,self.rows):
 self.dididi += 'n'
 for j in range(0,self.cols):
 self.dididi += '%g ' %(self.elements[i][j])
 return self.dididi

share|improve this question

asked Mar 29 at 0:39

JasmineJasmine

1

share|improve this question

asked Mar 29 at 0:39

JasmineJasmine

1

asked Mar 29 at 0:39

JasmineJasmine

1

asked Mar 29 at 0:39

JasmineJasmine

1