<pre><code>print("Welcome")
barcode1 = input("Please enter your first digit")
barcode2 = input("Please enter your second digit")
barcode3 = input("Please enter your third digit")
barcode4 = input("Please enter your fourth digit")
barcode5 = input("Please enter your fifth digit")
barcode6 = input("Please enter your sixth digit")
barcode7 = input("Please enter your seventh digit")
barcode1 = barcode1*3
print(barcode1)
</code></pre>
<p>这个数不是乘以3,而是111</p>