Encountered issues while reading the CSV file

Using Streamlit
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1

I don’t quite understand why using a function to read a CSV file would fail
or Sometimes it may not be able to read column names.
This is my code:

import streamlit as st
import pandas as pd


file = st.file_uploader("upload:")


def read_data(filename):
    df = pd.read_csv(filename, encoding='gbk')
    return df


if file:
    st.subheader("1")
    df1 = pd.read_csv(file, encoding="gbk")
    st.write(df1)
    st.subheader("2")
    df = read_data(file)  # st.write(pd.read_csv(file, encoding="gbk"))
    st.write(df)

image
image1473×896 107 KB

2

Because you have already read the file and there is nothing left to read.

Try this instead:

import streamlit as st
import pandas as pd


def read_data(filename):
    df = pd.read_csv(filename, encoding='gbk')
    return df


file = st.file_uploader("upload:")
if file:
    st.subheader("1")
    df1 = pd.read_csv(file, encoding="gbk")
    st.write(df1)
    st.subheader("2")
    file.seek(0)  # Back to the beginning of the file.
    df = read_data(file)  # st.write(pd.read_csv(file, encoding="gbk"))
    st.write(df)
3

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