AttributeError: 'DataFrame' object has no attribute 'c'

Question

project=pd.read_csv("train.csv",sep=',') 

this dataset train.csv has 200column, named as var_0,var_1 ....... var_199

for i in range(200):
    c= "var_" + str(i)

the above line is for creating variable names using loop

    #print(c)
    b= project.c.describe()

AttributeError                            Traceback (most recent call last)
<ipython-input-46-b90b661d528b> in <module>
      2     c= "var_" + str(i)
      3     #print(c)
----> 4     b= project.c.describe()

~/anaconda3/lib/python3.7/site-packages/pandas/core/generic.py in __getattr__(self, name)
   5177             if self._info_axis._can_hold_identifiers_and_holds_name(name):
   5178                 return self[name]
-> 5179             return object.__getattribute__(self, name)
   5180 
   5181     def __setattr__(self, name, value):

AttributeError: 'DataFrame' object has no attribute 'c'

Answer 1

You are calling it as if c was an attribute, while it is a column name; it should be:

project[c].describe()

and you don't need to assign it to a variable.

Answer 2

You have two issues with your code.

1st problem You overwrite the variable c in every loop your for does

for i in range(200):
    c= "var_" + str(i)

>> print(c)
>> "var_200"

What you want is:

c = ["var_" + str(i) for i in range(200)]

or

c = []
for i in range(200):
    c.append("var_" + str(i))

2nd problem The c is a python variable. Not a column. What you need to do is to use it like this

project[c].describe()

What you did would work only if you had a dataframe with the column name "c". For example

    a    b    c
0   1    2    3
1   3    1    5

You would be able to use project.c and would print

    c
0   3
1   5