如何将一些特定的.jpg文件复制到另一个目录？

Question

我想将一些特定的jpg文件复制到另一个目录，我不明白为什么它不起作用？我有很多图像，目前只想对某些类别进行排序，只有那些开头名称分别为15_0_xxx.jpg的类别15_1_xxx.jpgimport cv2import sysimport osimport shutil from os import listdirfrom os.path import isfile, joinmypath = "c:/Users/Harum/Desktop/make dir/"file_names = [ f for f in listdir(mypath) if isfile(join(mypath, f))]print(str(len(file_names))+ ' images loaded')cont_M =0cont_F =0m_age = "c:/Users/Harum/Desktop/make dir/M_15/"f_age = "c:/Users/Harum/Desktop/make dir/F_15/"input_m = []input_mS =[]input_fS =[]input_f = []def getZeros(number):    if(number > 10 and number <100):        return "0"    if(number < 10):        return "00"    else:        return ""for i, file in enumerate(file_names):    if file_names[i][0] == "15_0":        cont_M +=1        image = cv2.imread(mypath+file)        input_m.append(image)        input_mS.append(0)        zeros = getZeros(cont_M)        cv2.imwrite(m_age +"m_age"+str(zeros)+ str(cont_M)+ ".jpg",image)    if file_names[i][0] == "15_1":        cont_F +=1        image = cv2.imread(mypath+file)        input_f.append(image)        input_fs.append(1)        cv2.imwrite(f_age+"F_age"+str(zeros)+ str(cont_M)+ ".jpg",image) 

Answer 1

编辑：忘记了复制部分。你可以使用 shutil 来做到这一点

使用 glob 和 os 会做得更好：

from shutil import copyfile

import glob

import os

mypath = "c:/Users/Harum/Desktop/make dir/"

destination_path = "c:/Users/Harum/Desktop/copy/"

# using fstrings to add wildcard character to consider all files. You could add a

## file extension after, as in f"{mypath}15_*.jpg"

file_names = glob.glob(f"{mypath}15_*")

# skip the middle to the ifs

# (...)

# removed the enumerate as it doesn't seems like you're using the positional list index

for file in file_names:

    # getting only the filename (with extension)

    file_name = os.path.basename(file)

    # using the str().startswith() to check True or False

    if file_name.startswith("15_0"):

        cont_M +=1

        copyfile(file, f"{destination_path}{file_name}")

        # (...)

    elif file_name.startswith("15_1"):

        cont_F +=1

        copyfile(file, f"{destination_path}{file_name}")

        #(...)