enumerate

问题 I can't see the tqdm progress bar when I use this code to iterate my opened file: with open(file_path, 'r') as f: for i, line in enumerate(tqdm(f)): if i >= start and i <= end: print("line #: %s" % i) for i in tqdm(range(0, line_size, batch_size)): # pause if find a file naed pause at the currend dir re_batch = {} for j in range(batch_size): re_batch[j] = re.search(line, last_span) what's the right way to use tqdm here? 回答1: You're on the right track. You're using tqdm correctly, but stop

问题 \begin{enumerate}[label=\textbf{\arabic*.}] \item Numbered 1 \addtocounter{enumi}{1} \item Numbered 3 \addtocounter{enumi}{1} \item Numbered 5 \addtocounter{enumi}{1} \item Numbered 7 \addtocounter{enumi}{1} \item and so on... \end{enumerate} Is there a better way to get enumerate to give you a list of just the odd numbers without having to add an \addtocounter between every item? 回答1: Reworking this reference from TeX.SX quickly enough, my first suggestion would be the following, using the

问题 As the title suggests I wanted to enumerate the key and its values (without brackets) in python. I tried the following code : example_dict = {'left':'<','right':'>','up':'^','down':'v',} [print(i,j,a) for (i,j,a) in enumerate(example_dict.items())] But it doesn't work. I want the output to be like this 0 left < 1 right > 2 up ^ 3 down v Thank you in advance 回答1: In this case enumerate returns (index, (key, value)) , so you just need to change your unpacking to for i, (j, a) , though

问题 I'm attempting to install a driver on a client machine based on which version of MySQL is installed on the server and to do that I'd like to check the version on the server via registry key. That said, I need to enumerate the subkey(s) of HKEY_LOCAL_MACHINE\SOFTWARE\MySQL AB . There is usually just one key under this one and it is generally of the form: MySQL Server #.# , where # stands for a number. But because I don't know which value those are, is there a way to get the key and then I can

问题 I'm attempting to install a driver on a client machine based on which version of MySQL is installed on the server and to do that I'd like to check the version on the server via registry key. That said, I need to enumerate the subkey(s) of HKEY_LOCAL_MACHINE\SOFTWARE\MySQL AB . There is usually just one key under this one and it is generally of the form: MySQL Server #.# , where # stands for a number. But because I don't know which value those are, is there a way to get the key and then I can

问题 Say I have a list of items, and I want to iterate over the first few of it: items = list(range(10)) # I mean this to represent any kind of iterable. limit = 5 Naive implementation The Python naïf coming from other languages would probably write this perfectly serviceable and performant (if unidiomatic) code: index = 0 for item in items: # Python's `for` loop is a for-each. print(item) # or whatever function of that item. index += 1 if index == limit: break More idiomatic implementation But

问题 Say I have a list of items, and I want to iterate over the first few of it: items = list(range(10)) # I mean this to represent any kind of iterable. limit = 5 Naive implementation The Python naïf coming from other languages would probably write this perfectly serviceable and performant (if unidiomatic) code: index = 0 for item in items: # Python's `for` loop is a for-each. print(item) # or whatever function of that item. index += 1 if index == limit: break More idiomatic implementation But

问题 I know we use enumerate for iterating a list but I tried it in a dictionary and it didn't give an error. CODE: enumm = {0: 1, 1: 2, 2: 3, 4: 4, 5: 5, 6: 6, 7: 7} for i, j in enumerate(enumm): print(i, j) OUTPUT: 0 0 1 1 2 2 3 4 4 5 5 6 6 7 Can someone explain the output? 回答1: On top of the already provided answers there is a very nice pattern in Python that allows you to enumerate both keys and values of a dictionary. The normal case you enumerate the keys of the dictionary: example_dict = {1

问题 There are some process modules that I am getting error for, like permission denied and cannot enumerate for processes like Services, Idle, csrss. It appears there are processes whose modules fundamentally cannot be enumerated due to lack of permissions, even when running with elevation (as admin). How and what permission need to be obtained to be able to enumerate these processes. Cmdlet executed: Invoke-Command -Session $session -ScriptBlock { Get-Process -Module } and for local just Get