仅接受一种文件类型 [英] Only one file type to be accepted

问题描述

from tkinter import filedialog as fd

filename = fd.askopenfilename(title = "Select file",filetypes = (("CSV Files","*.csv"),("All","*.*")))

打开文件夹以选择文件，但是当我尝试时:

from tkinter import filedialog as fd

filename = fd.askopenfilename(title = "Select file",filetypes = ("CSV Files","*.csv"))

错误:

回溯(最近通话最近):文件 "D:\ python_projects \ csv_codes \ csv_reading.py"，第4行，在 filename = fd.askopenfilename(title =选择文件"，文件类型=("CSV文件"，"*.csv"))文件"C:\ Python \ lib \ tkinter \ filedialog.py"， 第375行，在askopenfilename中 在显示中返回Open(** options).show()文件"C:\ Python \ lib \ tkinter \ commondialog.py"，第43行 s = w.tk.call(self.command， w._options(self.options)) _tkinter.TclError:文件类型" .csv"错误，应为"typeName {扩展名?扩展名...?}?{macType?macTypes ...?}?"

Traceback (most recent call last): File "D:\python_projects\csv_codes\csv_reading.py", line 4, in filename = fd.askopenfilename(title = "Select file",filetypes = ("CSV Files" ,"*.csv")) File "C:\Python\lib\tkinter\filedialog.py", line 375, in askopenfilename return Open(**options).show() File "C:\Python\lib\tkinter\commondialog.py", line 43, in show s = w.tk.call(self.command, w._options(self.options)) _tkinter.TclError: bad file type ".csv", should be "typeName {extension ?extens ions ...?} ?{macType ?macTypes ...?}?"

我到底想要什么?:

我只希望选择.CSV个文件. (必修)

I want only .CSV files to be selected. (compulsory)

推荐答案

filetypes必须是一个元组的元组.例如:

filetypes needs to be a tuple of tuples. For example:

from tkinter import filedialog as fd

filename = fd.askopenfilename(title = "Select file",filetypes = (("CSV Files","*.csv"),))

但是我建议您在一个窗口中将所有内容整洁.例如，输入与您相同，但更整齐:

But I suggest you make it all neat and in one window. For example, same input as yours but tidier:

from tkinter import *
from tkinter import filedialog as fd

def get_file_name(file_entry):
    file_name = fd.askopenfilename(title = "Select file",filetypes = (("CSV Files","*.csv"),))
    file_entry.delete(0,END)
    file_entry.insert(0,file_name)

def run_and_close(event=None):
    ######################################
    ## EXECUTE OR CALL OTHER PYTHON FILE##
    ######################################
    close()

def close(event=None):
    master.withdraw() # if you want to bring it back
    sys.exit() # if you want to exit the entire thing

master = Tk()
master.title("This is my Interface")

entry_csv=Entry(master, text="", width=50)
entry_csv.grid(row=0, column=1, sticky=W, padx=5)

Label(master, text="Input CSV").grid(row=0, column=0 ,sticky=W)
Button(master, text="Browse...", width=10, command=lambda:get_file_name(entry_csv)).grid(row=0, column=2, sticky=W)

Button(master, text="Ok",     command=run_and_close, width=10).grid(row=3, column=1, sticky=E, padx=5)
Button(master, text="Cancel", command=close, width=10).grid(row=3, column=2, sticky=W)

master.bind('<Return>', run_and_close)
master.bind('<Escape>', close)
mainloop()

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