1. 时分转换
def convert(seconds):
seconds = seconds % (24 * 3600)
hour = seconds // 3600
seconds %= 3600
minutes = seconds // 60
seconds %= 60
return "%d:%02d:%02d" % (hour, minutes, seconds)
# Driver program
n = 12345
print(convert(n))
2. if- else statement
# Assign a value
number = 50
# Check the is more than 50 or not
if (number >= 50):
print("You have passed")
else:
print("You have not passed")
3. 转换图片格式JPEG
import os
import sys
from PIL import Image
if len(sys.argv) > 1:
if os.path.exists(sys.argv[1]):
im = Image.open(sys.argv[1])
target_name = sys.argv[1] + ".jpg"
rgb_im = im.convert('RGB')
rgb_im.save(target_name)
print("Saved as " + target_name)
else:
print(sys.argv[1] + " not found")
else:
print("Usage: convert2jpg.py ")
4. 在系统里寻找文件
import fnmatch
import os
rootPath = '/'
pattern = '*.mp3'
for root, dirs, files in os.walk(rootPath):
for filename in fnmatch.filter(files, pattern):
print( os.path.join(root, filename))
5. 随机密码生成器
import string
from random import *
characters = string.ascii_letters + string.punctuation + string.digits
password = "".join(choice(characters) for x in range(randint(8, 16)))
print (password)
6. 数一数列表中的字母有几个
# Define the string
string = 'Python Bash Java PHP PHP PERL'
# Define the search string
search = 'P'
# Store the count value
count = string.count(search)
# Print the formatted output
print("%s appears %d times" % (search, count))
