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AttributeError: 'str' object has no attribute 'copy' from user input

User input and command line argumentsHow to sort a list of objects based on an attribute of the objects?How to know if an object has an attribute in PythonAttributeError: 'module' object has no attributeAttributeError(“'str' object has no attribute 'read'”)Asking the user for input until they give a valid responsepython pandas: call pandas function on objects inherited from DataFrameRetain function and creation a of new table in python panda as SASPandas setting a value on a copy of a slice error when updating columnsPython - AttributeError: 'DataFrame' object has no attribute

0

I've this dataframe:

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

I need to accept user input dataframe name using this fonction and make a copy.
I get an error message "'str' object has no attribute 'copy' "
So, how translate this "str" into pandas ?

def copydf():
 global dfNewName
 dfname = input(" Enter dataframe Name :")
 print (dfname)
 dfNewName = dfname.copy()

Thank you if you can help.

python pandas dataframe

share|improve this question

asked Mar 8 at 22:21

Carlos CarvalhoCarlos Carvalho

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  why do you need a "copy" why not just use the string you got from the input?
  
  – JacobIRR
  Mar 8 at 22:25
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What exactly are you trying to accomplish? Where should the user input go? You're receiving an error because you are trying to use the copy method on a string (user input is always a string like "hello world"). Maybe you are expecting dfname to be a pandas dataframe?
  
  – lvrf
  Mar 8 at 22:28
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes the Idea is to create a copy "dfNewName" from the dataframe "dtf"
  
  – Carlos Carvalho
  Mar 8 at 23:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @JacobIRR - That's the issue, what returns from the input it's just a string, is not recognized by pandas.
  
  – Carlos Carvalho
  Mar 8 at 23:17
  

  
  
  
  

add a comment | 

0

I've this dataframe:

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

I need to accept user input dataframe name using this fonction and make a copy.
I get an error message "'str' object has no attribute 'copy' "
So, how translate this "str" into pandas ?

def copydf():
 global dfNewName
 dfname = input(" Enter dataframe Name :")
 print (dfname)
 dfNewName = dfname.copy()

Thank you if you can help.

python pandas dataframe

share|improve this question

asked Mar 8 at 22:21

Carlos CarvalhoCarlos Carvalho

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  why do you need a "copy" why not just use the string you got from the input?
  
  – JacobIRR
  Mar 8 at 22:25
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What exactly are you trying to accomplish? Where should the user input go? You're receiving an error because you are trying to use the copy method on a string (user input is always a string like "hello world"). Maybe you are expecting dfname to be a pandas dataframe?
  
  – lvrf
  Mar 8 at 22:28
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes the Idea is to create a copy "dfNewName" from the dataframe "dtf"
  
  – Carlos Carvalho
  Mar 8 at 23:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @JacobIRR - That's the issue, what returns from the input it's just a string, is not recognized by pandas.
  
  – Carlos Carvalho
  Mar 8 at 23:17
  

  
  
  
  

add a comment | 

I've this dataframe:

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

I need to accept user input dataframe name using this fonction and make a copy.
I get an error message "'str' object has no attribute 'copy' "
So, how translate this "str" into pandas ?

def copydf():
 global dfNewName
 dfname = input(" Enter dataframe Name :")
 print (dfname)
 dfNewName = dfname.copy()

Thank you if you can help.

python pandas dataframe

share|improve this question

asked Mar 8 at 22:21

Carlos CarvalhoCarlos Carvalho

1

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

def copydf():
 global dfNewName
 dfname = input(" Enter dataframe Name :")
 print (dfname)
 dfNewName = dfname.copy()

share|improve this question

asked Mar 8 at 22:21

Carlos CarvalhoCarlos Carvalho

1

share|improve this question

asked Mar 8 at 22:21

Carlos CarvalhoCarlos Carvalho

1

asked Mar 8 at 22:21

Carlos CarvalhoCarlos Carvalho

1

asked Mar 8 at 22:21

Carlos CarvalhoCarlos Carvalho

1

1 Answer
1

active

oldest

votes

0

You need to pass the user input with eval function.

import pandas as pd

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

def copydf():
 dfname = input(" Enter dataframe Name :")
 try:
 newdf = eval(dfname).copy()
 return newdf
 except NameError:
 print("Dataframe not found")


new_df= copydf() #this is your copied dataframe

share|improve this answer

edited Mar 9 at 20:27

answered Mar 8 at 22:47

hawk1337hawk1337

207

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It looked good but I get another error message : ValueError: If using all scalar values, you must pass an index
  
  – Carlos Carvalho
  Mar 8 at 23:12
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  That's simply perfect. You're great.Thank you
  
  – Carlos Carvalho
  Mar 9 at 0:16
  
  

  
  
  
  

add a comment | 

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0

You need to pass the user input with eval function.

import pandas as pd

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

def copydf():
 dfname = input(" Enter dataframe Name :")
 try:
 newdf = eval(dfname).copy()
 return newdf
 except NameError:
 print("Dataframe not found")


new_df= copydf() #this is your copied dataframe

share|improve this answer

edited Mar 9 at 20:27

answered Mar 8 at 22:47

hawk1337hawk1337

207

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It looked good but I get another error message : ValueError: If using all scalar values, you must pass an index
  
  – Carlos Carvalho
  Mar 8 at 23:12
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  That's simply perfect. You're great.Thank you
  
  – Carlos Carvalho
  Mar 9 at 0:16
  
  

  
  
  
  

add a comment | 

0

You need to pass the user input with eval function.

import pandas as pd

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

def copydf():
 dfname = input(" Enter dataframe Name :")
 try:
 newdf = eval(dfname).copy()
 return newdf
 except NameError:
 print("Dataframe not found")


new_df= copydf() #this is your copied dataframe

share|improve this answer

edited Mar 9 at 20:27

answered Mar 8 at 22:47

hawk1337hawk1337

207

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It looked good but I get another error message : ValueError: If using all scalar values, you must pass an index
  
  – Carlos Carvalho
  Mar 8 at 23:12
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  That's simply perfect. You're great.Thank you
  
  – Carlos Carvalho
  Mar 9 at 0:16
  
  

  
  
  
  

add a comment | 

You need to pass the user input with eval function.

import pandas as pd

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

def copydf():
 dfname = input(" Enter dataframe Name :")
 try:
 newdf = eval(dfname).copy()
 return newdf
 except NameError:
 print("Dataframe not found")


new_df= copydf() #this is your copied dataframe

share|improve this answer

edited Mar 9 at 20:27

answered Mar 8 at 22:47

hawk1337hawk1337

207

import pandas as pd

dtf = pd.DataFrame('col1' : ['Buenos Dias'],
 'col2' : ["Hello"],
 'col3' : ["Bonjour"])

def copydf():
 dfname = input(" Enter dataframe Name :")
 try:
 newdf = eval(dfname).copy()
 return newdf
 except NameError:
 print("Dataframe not found")


new_df= copydf() #this is your copied dataframe

share|improve this answer

edited Mar 9 at 20:27

answered Mar 8 at 22:47

hawk1337hawk1337

207

answered Mar 8 at 22:47

hawk1337hawk1337

207

answered Mar 8 at 22:47

hawk1337hawk1337

207