Convert a integer to a String in Python Pandas-CodePudding

So I want to convert a single integer to string in Pandas not a whole column or row. However, Pandas won't allow me to use str(i) which i is an integer and have the error module object is not callable. How should I fix this?

So I have an index i = 5 I want to append this to a string str = '[' str(i) ']' My expectation would be str = 1 enter image description here

CodePudding user response：

you can you astype, for example, I create a dataframe:

df = pd.DataFrame({"col1":["A","B","C"],
                   "col2":[1,2,3]})
df.head()

output:

   col1 col2
0   A   1
1   B   2
2   C   3

and turn the value 3 in col2 to str:

temp = df.col2[2].astype(str)
temp, type(temp)

output:

('3', numpy.str_)

OR, The f-string can be you in your case:

str = f"something here {df.index[i]} something here"

CodePudding user response：

The whole column will turn into 'object'(which means 'string' data in this case) when you change any single one element of the numerical column into 'string'.

You can try with:

df.colA[0] = str(df.colA[0])
# Then check the column 'colA' if its dtype is 'object'
df.colA