AttributeError:'str' object has no attribute 'unique' (Pandas.unique) - pandas

Question

In my script, I use pandas module. When I execute my file.py - everything works well. But I've converted my file.py to file.exe with auto-py-to-exe and got an error: AttributeError:'str' object has no attribute 'unique'. It's strange because it worked normally. The line where becomes an error: wells=list(file[0].unique()). Who knows this issue, please help.
import tkinter as tk
import tkinter.filedialog as fd
import pandas as pd
import os
import datetime
from datetime import datetime, date
import numpy as np
pd.set_option('display.notebook_repr_html', False)
pd.set_option('display.max_columns', 80)
pd.set_option('display.max_rows', 200)
pd.set_option('display.width', 800)
def resource_path(relative_path):
try:
base_path = sys._MEIPASS
except Exception:
base_path = os.path.abspath(".")
return os.path.join(base_path, relative_path)
def open():
global file_excel, name
file_excel = fd.askopenfilename(initialdir='/Desktop', title='Открыть файл', filetypes = [("Excel", "*.xlsx")])
name = os.path.basename(file_excel)
name=os.path.splitext(name)[0]
file_excel=pd.read_excel(file_excel, skiprows=[0], header=None)
win.destroy()
return file_excel, name
win = tk.Tk()
path = resource_path("image.png")
photo = tk.PhotoImage(file=path)
win.iconphoto(False, photo)
win.config(bg='#FFC')
win.title('Конвертация в формат .ev')
win.geometry('400x130+500+500')
win.resizable(False, False)
label_1 = tk.Label(win, text = 'Выберите файл с испытаниями скважин:',
bg = '#FFC',
font=('Arial', 10, 'bold'),
padx=20,
pady=10).pack()
btn_1 = tk.Button(win, text = 'Выбрать Excel',
command = open,
activebackground = '#6F6',
font=('Arial', 12, 'bold'),
padx=20,
pady=10,
relief = tk.RAISED,
bd=2).pack()
win.mainloop()
wells=list(file_excel[0].unique())
file_excel[1] = pd.to_datetime(file_excel[1], errors='coerce').dt.strftime("%d/%m/%Y")
file_excel[4] = np.where(file_excel[1].str, 'Perforation', np.nan)
file_excel.iloc[:,[2,3]]=file_excel.iloc[:,[2,3]].abs()
col_list = list(file_excel)
col_list[4], col_list[2] = col_list[2], col_list[4]
file_excel.columns = col_list
Perforation=pd.DataFrame(data=None)
for i in wells:
well_name=pd.DataFrame({'WELLNAME '+i}, columns=[1])
Perforation=Perforation.append(well_name)
Perforation=Perforation.append(file_excel.iloc[:,[1,2,3,4]][file_excel.iloc[:,0]==i])
Perforation=Perforation.append(pd.Series(dtype = 'object'), ignore_index=True)
def SaveFile():
Save=fd.asksaveasfile(mode='w',defaultextension=".ev", initialfile=name)
Save.write(Perforation.to_string(index=False, header=False, na_rep=' '))
win.destroy()
win = tk.Tk()
path = resource_path("image.png")
photo = tk.PhotoImage(file=path)
win.iconphoto(False, photo)
win.config(bg='#FFC')
win.title('Конвертация в формат .ev')
win.geometry('400x130+500+500')
win.resizable(False, False)
label_1 = tk.Label(win, text = 'Сохранение:',
bg = '#FFC',
font=('Arial', 10, 'bold'),
padx=20,
pady=10).pack()
btn_1 = tk.Button(win, text = 'Сохранить как',
command = SaveFile,
activebackground = '#6F6',
font=('Arial', 12, 'bold'),
padx=20,
pady=10,
relief = tk.RAISED,
bd=2).pack()
win.mainloop()
type of file[0]
Error screen

Answer 1

When I created virtual env I should have added openpyxl module. And I made it and everything is fine now