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HomeBackend DevelopmentPython TutorialHow to use tqdm library in python to realize circular printing progress bar

1. while loop

Python's while loop can print a progress bar, which can be implemented using the tqdm library. tqdm is a library for adding progress bars in Python, which can be easily integrated into while loops.

Here is a simple example that uses a while loop and the tqdm library to print a progress bar from 1 to 100:

from tqdm import tqdm
i = 0
pbar = tqdm(total=100)
while i < 100:
    i += 1
    pbar.update(1)
    pbar.set_description("Processing %d" % i)
    # 执行循环体内的代码
pbar.close()

In the above code, the tqdm library is first imported. Then, use a variable i to count the number of loop iterations. Also creates a tqdm object and sets its total parameter to 100 so it knows the total number of iterations it needs to do.

In each loop iteration, increase the value of i by 1 and then increase it by calling the update() method of the tqdm object The value of the progress bar. We also set the description of the progress bar by calling the set_description() method of the tqdm object so that it displays the currently processed number.

Finally, at the end of the loop, the tqdm object is closed to ensure that the progress bar is displayed correctly.

It should be noted that in order to use the tqdm library, you need to install it via pip first. You can install tqdm in the terminal using the following command:

pip install tqdm

2. for loop

It is relatively simple to implement

    for i in tqdm(range(10)):# 显示进度条

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