FileSys¶

#get dir
dir = os.path.dirname(sys.argv[0])
path = os.path.join(dir, csvfile)

#get user dir
dir = os.path.expanduser('~')

#python file dir
os.path.dirname(__file__)

#python file name
os.path.basename(__file__)

#create dir
if not os.path.exists(directory):
  os.makedirs(directory)

#get filename from path
os.path.basename(r'c:\x.txt')

import os
files = []
for (dirpath, dirnames, filenames) in os.walk(dir):
    files += [os.path.join(dirpath, file) for file in filenames if file[-3:]=='.gz']
for filename in files:
    print(filename)

#print 1d list???
print('[' + ', '.join(map(str, mylist)) + ']')
#print 2d list
print(*mylist, sep='')

with open('path_file.csv', 'r', encoding='utf-8') as f:
    lines = f.read().splitlines()

with open('somefile.txt', 'a', newline='') as f:
    f.write('Hello\n')
    w = csv.writer(f, delimiter=',', quotechar='"', quoting=csv.QUOTE_MINIMAL)
    w.writerow([1,2])
    df.to_csv(f, index=False)

#write array to csv file
np.savetxt('myfile.csv', myarray, delimiter=',')

#read and write together
with open(file_in) as csv_in, with open(file_out, 'w') as csv_out:
    xxx

with open(fpath, 'r') as f:
    r = csv.reader(f)
    line = next(r)

from io import TextIOWrapper
from zipfile import ZipFile

with ZipFile(file,'r') as zip:
    with zip.open(zip.namelist()[0]) as zipf:
        f = TextIOWrapper(zipf)
        lines = f.read().splitlines()

print('progress report started')
for id, yr in enumerate(range(2000, 2021)):
    print(f'id: {id:003} year: {yr}\r', end='')
print(' '.join('' for i in range(80)) + '\r', end='')
print('progress report ended')