我想将烂番茄电影评论数据集导入单个数据框。如何将两个 1 列字符串的数据集组合成一个text, label形状？

这是我目前所处的位置（您可以在 Google Colab 中复制）：

import os
import pandas as pd

# Reset
!rm -rf "rt-polarity.csv"

def fetch_rt_polarity_data():
# Fetch Data
if not os.path.isfile("rt-polaritydata.tar.gz"):
    !wget -q http://www.cs.cornell.edu/people/pabo/movie-review-data/rt-polaritydata.tar.gz
    !tar -xzf rt-polaritydata.tar.gz
    !mv rt-polaritydata/rt-polarity.pos rt-polarity.pos
    !mv rt-polaritydata/rt-polarity.neg rt-polarity.neg
    !rm -rf rt-*

# Format Data
df_pos = pd.read_csv("rt-polarity.pos", encoding='latin-1', sep="\t", lineterminator="\n")
df_pos = df_pos.reset_index(drop=True)
df_pos.columns = ['text']
df_pos['label'] = 1

df_neg = pd.read_csv("rt-polarity.neg", encoding='latin-1', sep="\t", lineterminator="\n")
df_neg = df_neg.reset_index(drop=True)
df_neg.columns = ['text']
df_neg['label'] = 0

# Combine
df = pd.concat([df_pos, df_neg], ignore_index=True)
df.head(10)

df.to_csv("rt-polarity.csv")

df = pd.read_csv("rt-polarity.csv", encoding='latin-1', sep="\t", lineterminator="\n")
return df

df = fetch_rt_polarity_data();
df.head(5)