Does Julia have a same way to read and write data (Array & String) as Python?

I've used Python to analyze simulation data until now, but sometimes it's slower than I expected. So, I've been trying to use Julia these days, but It's hard for me to get familiar with it and also get information as much as python. That's why I am here for help!

Q1. The best way to import array directly from a file and export array to a file in Julia (I've used "numpy genfromtxt" & "numpy savetxt" in python) Q2. The best way to read strings and export these as string but also use specific format ('%10.3f' %, rjust, ljust so on.) in Julia

To understand my question properly, I also leave python code for the question.

Q1. The best way to import array directly from a file and export array to a file.

This array is in the test.txt file
  1.1     -399.16
  1.2     -398.21
  2.4     -399.59
  4.5     -401.51
  2.2    -1071.64
  2.3    -1074.35
  5.5    -1077.36
  9.7    -1069.9
  14.0    -1731.35
  14.2    -1739.84

import numpy as np
data = np.genfromtxt('D:\\JULIA\\test.txt')
np.savetxt('D:\\JULIA\\outdata.txt', data, fmt="%10.3f")

Q2. The best way to read strings and export these as string but use specifit format ('%10.3f' %, rjust, ljust so on.)

data = open('D:\\JULIA\\test.txt','r')
outdata = open('D:\\JULIA\\outdata.txt','w')
lines= data.readlines()
for line in lines:
    splitline  = line.split()
    col1 = float(splitline[0])
    col2 = float(splitline[1])
    outdata.write(('%10.3f' % col1).rjust(20) +', ' +('%10.3f' %col2).rjust(40)+'\n')
data.close()
outdata.close()

Please answer me if there are the same or similar ways in Julia or just different way should be used in Julia.