我正在尝试制作一个脚本来递归搜索给定目录的文件（给定名称），格式如下：
pi@pi ~ $ ./lect4_first.py /home dranie
这是完整的脚本：
#!/usr/bin/python3
import sys
import os
flag = False
dir_path, file_name = sys.argv[1], sys.argv[2]
for root, directories, filenames in os.walk(dir_path):
if file_name.startswith("*") or file_name.endswith("*"):
for filename in filenames:
if str(filename).endswith(file_name[1:]):
flag = True
print(os.path.join(root, filename))
elif str(filename).startswith(file_name[:-2]):
flag = True
print(os.path.join(root, filename))
else:
for filename in filenames:
if str(filename) == file_name:
flag = True
print(os.path.join(root, filename))
if flag == False:
print("'{}' not found in the '{}' directory".format(file_name, dir_path))
到目前为止，脚本可以正常工作，但如果找不到匹配项 - 它会打印多条未找到的消息：
dranie not found in /home
dranie not found in /home
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如果在目录或其子目录下找不到具有给定名称的文件，我想只打印一条未找到的消息，但到目前为止我无法弄清楚...
答案 0 :(得分：1)
我不知道＆＃34; lect4_first.py＆＃34;包含？
你可以试试这个：
import os
import sys
args = sys.argv
if len(args) == 3:
directory,filename = args[1],args[2]
for root, dirs, files in os.walk(directory):
if filename in files:
f_name = os.path.join(root, filename)
print "File exists and its path is : "+f_name
break
else:
print "File does not exist"
输出：
root:~/learn/python# python file_exist.py /root test_file_exists_1.txt
File does not exist
root:~/learn/python# python file_exist.py /root test_file_exists.txt
File exists and its path is : /root/learn/python/test_file_exists.txt