Update NB A.3 with f-strings

Author: jsdodge

notebooks/A.3-Template-Fit.ipynb

@@ -50,8 +50,8 @@
    "outputs": [],
    "source": [
     "# Display file contents\n",
-    "file = open('data/Example-Data.csv', 'r')\n",
-    "print(file.read())"
+    "with open('data/Example-Data.csv', 'r') as file:\n",
+    "    print(file.read())"
    ]
   },
   {
@@ -101,7 +101,7 @@
    "metadata": {},
    "source": [
     "## Step 3: Plot the data\n",
-    "Change the variable names, title, axis labels, etc, as appropriate."
+    "Change the variable names, title, axis labels, etc., as appropriate."
    ]
   },
   {
@@ -237,9 +237,9 @@
     "# Display formatted results at correct level of significance\n",
     "# Adjust each format string as appropriate\n",
     "print(\"Correctly formatted precision:\")\n",
-    "print(\"Model slope (mV/Hz):     {0:.2f} ± {1:.2f}\".format(mOpt, mAlpha))\n",
-    "print(\"Model intercept (mV):    {0:.0f} ± {1:.0f}\".format(bOpt, bAlpha))\n",
-    "print(\"Correlation coefficient: {0:.1f}\".format(rho_mb))"
+    "print(f\"Model slope (mV/Hz):     {mOpt:.2f} ± {mAlpha:.2f}\")\n",
+    "print(f\"Model intercept (mV):    {bOpt:.0f} ± {bAlpha:.0f}\")\n",
+    "print(\"Correlation coefficient: {rho_mb:.1f}\")"
    ]
   },
   {
@@ -340,8 +340,8 @@
    "outputs": [],
    "source": [
     "cdf = chi2.cdf(chisq,dof)\n",
-    "print(\"Cumulative probability = {0:.3f}\".format(cdf))\n",
-    "print(\"Significance: {0:.3f}\".format(1-cdf))"
+    "print(f\"Cumulative probability = {cdf:.3f}\")\n",
+    "print(f\"Significance: {1-cdf:.3f}\")"
    ]
   },
   {