Please address the comments from this code review:

## Individual Comments

### Comment 1
<location> `src/mintpy/objects/progress.py:109` </location>
<code_context>
    def update_amount(self, newAmount=0, suffix=''):
        """ Update the progress bar with the new amount (with min and max
        values set at initialization; if it is over or under, it takes the
        min or max value as a default.
        """

        newAmount = max(newAmount, self.min)
        newAmount = min(newAmount, self.max)
        self.amount = newAmount

        # Add whitespace to suffix if turned ON
        if suffix:
            suffix = ' '+suffix

        # Figure out the new percent done (round to an integer)
        diffFromMin = float(self.amount - self.min)
        if self.span == 0:
            percentDone = 100
        else:
            percentDone = (diffFromMin / float(self.span)) * 100.0
        percentDone = int(np.round(percentDone))
        percentDone = max(0, min(100, percentDone))

        # Figure out how many hash bars the percentage should be
        allFull = self.width - 2 - 18
        numHashes = (percentDone / 100.0) * allFull
        numHashes = int(np.round(numHashes))

        # Build a progress bar with an arrow of equal signs; special cases for empty and full
        if numHashes == 0:
            self.prog_bar = '{}[>{}]'.format(self.prefix, ' '*(allFull-1))

        elif numHashes == allFull:
            self.prog_bar = '{}[{}]'.format(self.prefix, '='*allFull)
            self.prog_bar += suffix

        else:
            self.prog_bar = '[{}>{}]'.format('='*(numHashes-1), ' '*(allFull-numHashes))

            # figure out where to put the percentage (roughly centered)
            percentPlace = int(len(self.prog_bar)/2 - len(str(percentDone)))
            percentString = f' {percentDone}% '

            # slice the percentage into the bar
            self.prog_bar = ''.join([self.prog_bar[0:percentPlace],
                                     percentString,
                                     self.prog_bar[percentPlace+len(percentString):]])

            # prefix and suffix
            self.prog_bar = self.prefix + self.prog_bar + suffix

            # time info - elapsed time and estimated remaining time
            if percentDone > 0:
                elapse_time = time.time() - self.start_time
                remain_time = int(elapse_time * (100./percentDone-1))
                self.prog_bar += f'{int(elapse_time):5d}s / {int(remain_time):5d}s'

</code_context>

<issue_to_address>
**issue (code-quality):** We've found these issues:

- Replace if statement with if expression ([`assign-if-exp`](https://docs.sourcery.ai/Reference/Default-Rules/refactorings/assign-if-exp/))
- Replace call to format with f-string [×2] ([`use-fstring-for-formatting`](https://docs.sourcery.ai/Reference/Default-Rules/refactorings/use-fstring-for-formatting/))
- Replace a[0:x] with a[:x] and a[x:len(a)] with a[x:] ([`remove-redundant-slice-index`](https://docs.sourcery.ai/Reference/Default-Rules/refactorings/remove-redundant-slice-index/))
- Remove unnecessary casts to int, str, float or bool ([`remove-unnecessary-cast`](https://docs.sourcery.ai/Reference/Default-Rules/refactorings/remove-unnecessary-cast/))
</issue_to_address>